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SpeTool

SpeTool 1/16 Inch Down Cut CNC Router Bits 1/4 Inch Shank Carbide Spiral Downcut End Mill for Wood Inlay Slot Carving Engraving.

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Size: 1/16" Dia -1/2" CL - 1/4" Shank


Style: DOWN CUT


Features

  • SPECIFICATION. Down cut router bits 1/2" cutting length; 1/16" cutting diameter; 1/4" shank; 2" overall length, can be used on routers with 1/4" collect.
  • COATING. The new coating provide up to 2.5 times life than the uncoated, make the bit sturdy durable, sharp efficient, smooth stable.
  • DOWN CUT. Spiral bits used for smoothly downcut groove and slots, Mortises, Cycles and dados leave with clean edge and top surface, better than straight bits
  • COMPATIBILITY. This Router Bits is perfect for soft woods, hard woods, Plywood, laminate, OAK, MDF and any hardwood working. It can be used with cnc router and handheld router with 1/4" collet.
  • DURABLE AND PRECISE. This Downcut router bits are high-quality construction ensures durability and precision, allowing for consistent and accurate cuts.
  • SPETOOL SERVICE. Good quality, cost-effective, efficient after-sales service, etc.

Description

high-quality carbide router bits for durability and long-lasting performance, providing accurate and clean cuts SpeTool offer various sizes（1/32" 1/16" 1/8" 3/16" 1/4" 3/8" 1/2"） to meet the needs of various woodworking projects Industry-quality standards to deliver precise cuts, ensuring outstanding performance Sharp cutting edge provide efficient precise and smooth routing operations. Utilizes advanced technology to deliver precise results, ensuring your woodworking projects are flawless. Ideal for woodworking projects, DIY crafts, and professional woodworking tasks Down-cut bit leaves a clean top edge but a rough bottom edge，Up-cut bit leaves a smooth bottom edge but a rough top edge，Compression bit cut both top and bottom cleanly Spiral router bits withTAC coating reduces friction, prevents overheating, and extends the tool's lifespan up to 2.5 times life than the uncoated. It also promotes cleaner cuts and smoother finishes, making it ideal for woodworking and machining tasks Down Cut Spiral Rouer Bit 10PCS Coated CNC Bit Set Flush Trim Router Bit Spiral Rouer Bit Set Extra Long Up Cut Extra Long Compression About Us SpeTool is specialized in manufacturing various cutting tools including CNC router bits, carving and engraving bits, aluminum and metal end mills, grinder burr and other rotary tools for industrial and DIY applications. We’re committed to providing high-quality products and services to our customers. If you have any questions, welcome to leave a message. Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store

Size: 1/16" Dia -1/2" CL - 1/4" Shank


Material: Carbide


Brand: SpeTool


Cutting Length: 0.5 inches


Cut Type: Down-Cut


Size Name: 1/16" Dia -1/2" CL - 1/4" Shank


Cutting Length: 0.5 inches


Cutting Diameter: 0.06 inches


Item Diameter: 0.25 inches


Cut Type: Down-Cut


Number of Flutes: 2


Material Type: Carbide


Brand Name: SpeTool


UPC: 792933650031


Included Components: Plastic Storage Box


Manufacturer: SpeTool


Model: SP-D1/4-1/16-D-SPE-X


Part Number: SP-D1/4-1/16-D-SPE-X


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Aug 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • SpeTool Down Cut Spiral Router Bit (1/4" Shank, 1-1/4" Cutting Length, 3" OVL) Review
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank Style: DOWN CUT
Category: CNC router bit for woodworking Purchase context I bought this SpeTool Down Cut Spiral Router Bit (1/4" Shank, 1-1/4" Cutting Length, 3" OVL) because I’m new to CNC routing and it had strong reviews at an affordable price. Before purchasing, I expected clean, precise cuts comparable to more expensive bits. Unboxing & first impressions The packaging was basic but adequate and included no accessories beyond the bit itself. My first impression was that the bit looked solid with a sharp cutting edge. Testing and real‑world use I used the bit across five woodworking projects (two pine boxes for my granddaughters and several cherry rosary boxes). During this time, I used it to cut inlays, slots and mortises on pine and cherry wood. It performed beautifully, producing clean, chip‑free cuts on both softwood and hardwood. Notable features were its down‑cut spiral design that reduces tear‑out and the durable coated carbide which stays sharp. Over time, the durability was excellent; after five projects it still cuts like new. Pros Delivers clean, precise cuts on pine and cherry wood Feels durable thanks to coated carbide construction Economical price compared to more expensive bits Performs as well as higher‑priced alternatives Cons None experienced so far Value and comparison Compared to similar products, this bit costs less but performs on par with pricier down‑cut bits. The quality far exceeds its cost, making it a great value. Hidden costs: none. Verdict / recommendation Overall, I’m extremely satisfied with this router bit. I would recommend it to other CNC hobbyists and woodworkers. This product is ideal for beginners through experienced woodworkers who need a reliable down‑cut bit, but those seeking a specific cutting diameter or length may need to verify compatibility. ... show more
Reviewed in the United States on October 7, 2025 by Joseph G. Dudash
    • Great performance so far, and the price is reasonable.
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank Style: COMPRESSION CUT
Review Image by Trent
Review Image by Trent
The key here is understanding what you are buying and how it works. A compression bit attempts to combine the up-cut and down-cut spiral bits, but in doing so it requires a transition point that goes from up-cut to down-cut. This bit transitions at about 3/16" from the tip of the cutter. This means if you only plunge 3/16", or less, you will only engage the up-cut portion, unless you make more passes on both sides at a depth over 3/16", you will not get the benefit of having both on a single bit. Up-cut leaves a cleaner bottom, down-cut a cleaner surface edge. Basically pick where you will risk tear-out or a rougher surface. To get the best of both your initial cut needs to clear 3/16" or else you have to expand it at full depth. If you are looking for a clean face, as in less surface tear out, and won't be going deep on your cuts... this isn't the right bit. Go buy one of their down-cut spiral bits. For the price I decided to give this brand a go over my normal brand that is quite expensive, and so far so good. Early results - 1 project done - are that it is sharp and when used correctly leaves a good surface and bottom. Longevity is always the question with less expensive bits. This isn't a "cheap" bit, per se, but it is in that mid-tier area. I won't know how this truly does for another couple of months, but if it lasts anywhere over half as long as the other bits, at about half the price, it is a win. I normally avoid 1/4" shank bits when I need to plunge a ways down, but no one seems to make a 1/2" shank compression, so 1/4" it is. If they made this with a 1/2" shank I'd pay more for that in a second. I am not sure if these have an actual coating that will extend life by cooling the bit, or if it is cosmetic only, so don't assume the unique colors mean it has a proprietary coating that another brand has. It does look cool, though, lol. So far, so good, and I am considering testing out a downcut of their as well, instead of my normal brand. The price is very alluring, and if their total line is quality then switching over may be worth it. ... show more
Reviewed in the United States on March 16, 2025 by Trent
    • Great for CNC projects
Size: 1/8" Dia - 1" CL -1/4" Shank Style: UP CUT
SpeTool is my go to bit for CNC carving. Performance is equal to Freud without the cost. Material I use it in is oak, walnut, maple. Compatible with 1/4 inch shank routers. Up cut leaves a smooth surface at the bottom of the cut. Extremely accurate.
Reviewed in the United States on June 21, 2026 by R. W.
    • Effortless cuts
Size: 1/4" Dia - 1" CL -1/4" Shank Style: COMPRESSION CUT
I purchased this bit to help my friend with a shelving project. After watching some videos I chose the compression bit over a straight bit. It was my first time using a compression bit, but now I’m hooked! The cuts were clean, smooth and effortless. The bit came well packaged, is good quality and performed flawlessly. ... show more
Reviewed in the United States on May 15, 2026 by Nancy S
    • Quality bit, wish they were still in the $35 range.
Size: 1/2" Dia - 1-1/4" CL -1/2" Shank Style: UP CUT
Good quality bit. I am typically cutting hardwoods and often epoxy which is tough on bits. These last quite well and a nice alternative to the expensive Specktra bits I was using as I go through quite a few. The only reason for the 4 stars is the price has gone up from mid $30s to almost $50.
Reviewed in the United States on April 19, 2026 by Bradford T.
    • 1/32 and white oak
Size: 1/32" Dia - 1/8" CL -1/4" Shank Style: UP CUT
First use was a great result. Working on a template guide platform. The bit sliced through white oak without fail. White oaks hardness is around 1350 on the janka scale. Using a 1/32 diameter bit on this lumber was a flip of the coin. But, it survived without any issues.
Reviewed in the United States on June 7, 2026 by Thomas Workman
    • Superb bit to have in the tool box.
Size: 3/8" Dia - 1-1/4" CL -1/2" Shank Style: COMPRESSION CUT
Review Image by Max d.
Review Image by Max d.
Review Image by Max d.
I have used this single 3/8 compression bit for numerous projects. It has held up very well! The finish which this bit leave is fantastic! It also has no issue preforming full depth of cut. Attached are some projects which I have used this bit for, it cut 180 bench dog holes through 1” of MDF on my CNC, it cut all the T-track pockets for my waste board. It still looks brand new and has edges many boards for me for glue up project. I had also attached a slow motion video of it edging some cedar with a 0.062” width of cut at full depth. I love have small chips are observed going up from the up-cutting flutes, and long chips can be observed going down from the down-cutting flutes. Fantastic tool. ... show more
Reviewed in the United States on February 24, 2026 by Max d.
    • Made very clean cuts in plastic
Size: 1/8" Dia - 1" CL -1/4" Shank Style: DOWN CUT
I used this bit in a drill press with a cross-slide vice to cut openings in plastic electronics hobby boxes. It was very sharp and made nice clean edges.
Reviewed in the United States on June 12, 2026 by RM

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