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SpeTool

SpeTool Compression Spiral Router Bits 3/8 inch Cutting Diameter with TAC Coated Solid Carbide CNC End Mill for Wood Small Cut, Carving

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Availability: 13 left in stock
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Arrives Tuesday, Oct 20
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Size: 3/8" Dia - 1-1/4" CL -1/2" Shank


Style: COMPRESSION CUT


Features

  • SPECIFICATION. Compression cut spiral router bit 1-1/4" cutting length; 3/8" cutting diameter; 1/2" shank; 3" overall length, can be used on routers with 1/2" collect.
  • COATING. The new coating provide up to 2.5 times life than the uncoated, make the bit sturdy durable, sharp efficient, smooth stable.
  • Compression CUT. CNC Spiral bits used for smoothly Compressioncut groove and slots, Mortises, Cycles and dados leave with clean edge and top surface, better than straight bits
  • COMPATIBILITY. This CNC End Mill 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 1/2" collet.
  • DURABLE AND PRECISE. This Compression-cut spiral router bits are high-quality construction ensures durability and precision, allowing for consistent and accurate cuts.

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 Router Lift System 10PCS Coated CNC Bit Set 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.

Size: 3/8" Dia - 1-1/4" CL -1/2" Shank


Material: Tungsten Carbide


Brand: SpeTool


Cutting Length: 1.25 inches


Item Weight: 3.5 ounces


Size Name: 3/8" Dia - 1-1/4" CL -1/2" Shank


Cutting Length: 1.25 inches


Item Weight: 3.5 ounces


Cutting Diameter: 0.38 inches


Item Diameter: 0.5 inches


Cut Type: Non-Center Cutting


Number of Flutes: 4


Material Type: Tungsten Carbide


Brand Name: SpeTool


Number of Items: 1


Unit Count: 1 Count


Included Components: Plastic Storage Box


Manufacturer: Spetool


Model: SP-D1/2-3/8-U&D-TAC-FBA


Part Number: SP-D1/2-3/8-U&D-TAC-FBA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

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

    • 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
    • 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.
    • Good bit
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank Style: COMPRESSION CUT
Nice compression bit, works well. I use this quite often and it is still sharp.
Reviewed in the United States on September 5, 2026 by Thomas Beheler
    • Amazing, such a noise reduction when cutting with this bit and leaves a great surface finish
Size: 1/4" Dia - 1" CL -1/4" Shank Style: COMPRESSION CUT
I will say this might be the best purchase I have ever made for my CNC. I was having squealing issues with other bits, down, up, tried a lot of bits. This is my first compression bit, but it just had a low hum as it cut, and it left a great finish. I am going to try other compression bits as well, but for this price and the great quality cut and most importantly the noise reduction I wasn't expecting. Maybe because its so sharp, the coating looks nice to, maybe that will help with the durability and life of the bit. Its performance for the money cant be beat, especially when it is cheaper than other bits I have used before. ... show more
Reviewed in the United States on July 27, 2025 by Stu
    • 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
    • Cuts more than 1/2”
Pros: Beautiful, crisp cuts with minimal to zero tear out. Seems to be well-made, sharp and durable Long length means I can use it in my router table and with a jig and still get the required depth on my piece with plenty of bit to spare. Cons: Unfortunately, I bought this specifically to use with my box-joint jig, and it cuts slightly wider than 1/2 inch, making it loose on the key. For something that requires a certain level of precision, it’s not great. Overall, I’ll keep it for those cuts that don’t have to be precise, or if I ever need a slightly oversized bit, but unfortunately, the purpose I bought it for, it’s not great. ... show more
Reviewed in the United States on July 13, 2025 by PPK
    • A good value bit that works well
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank Style: COMPRESSION CUT
Great product, great value. I've purchased a bunch of different bits for my CNC machine and the ones from SPETool have been my go to bits. They are priced right, work well and last a long time. Zero complaints with these bits and I've used them on hardwood, softwood and MDF without any issues.
Reviewed in the United States on November 30, 2025 by Sam E
    • Does a great job
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank Style: COMPRESSION CUT
Great cnc bit. I Cut out a lot of 1.75 and 2" deep bowls on the cnc and it cuts clean with no issues.
Reviewed in the United States on March 4, 2026 by Dukes

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