Downcut Spiral Router Bit 1/2 Inch Shank, Extra Long 5 Inch Solid Carbide Down Cut Spiral Router Bits Wood CNC End Mill Bits for Woodworking Mortise Slot Cutting
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Availability:
Only 5 left in stock, order soon!
Arrives
Monday, Apr 20
Size: 1/2" Dia - 3" CL -1/2" Shank
Style: DOWN CUT
Features
- SIZE. Extra Long Downcut spiral router bit with 1/2" cutting diameter; 3" cutting length; 1/2" shank; 5" overall length, can be used on CNC, engraving machine, router table and hand-held machine.
- TAC COATING. The TAC coating provide up to 2.5 times life than the uncoated. Higher hardness and more heat resistance, making the CNC router bit smooth stable, sturdy durable.
- DOWNCUT spiral router bits used for smoothly upcut groove and slots, Mortises, Cycles and dados leave with clean Edge and Top surface, better than straight bits.
- APPLICATION. This CNC End Mill Router Bits is perfect for soft woods, hard woods, Plywood, laminate, OAK, MDF, hard woods and aluminum. Perfect for 2D/3D wood carving or engraving. CNC spiral router end mill bit are Suitable for side milling, end milling, finish machining.
- FINE WORKMANSHIP - Our products deliver outstanding high accuracy with an error of 0.02mm, empowering users to achieve professional cutting quality effortlessly.
Size: 1/2" Dia - 3" CL -1/2" Shank
Material: Carbide
Brand: BINSTAK
Item Weight: 6.4 ounces
Number of Flutes: 2
Size Name: 1/2" Dia - 3" CL -1/2" Shank
Item Weight: 6.4 ounces
Number of Flutes: 2
Material Type: Carbide
Brand Name: BINSTAK
Part Number: B2508
Manufacturer: BINSTAK
Included Components: 1 Piece 1/2 Inch Shank Spiral Router Bit
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Apr 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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 1/4" Dia - 2" CL -1/4" Shank
Style: DOWN CUT
Great long bit for smooth clean cuts!
Reviewed in the United States on November 9, 2025 by Olivia
Size: 1/8" Dia - 1/2" CL -1/4" Shank
Style: DOWN CUT
This worked great but it did get dull after six pcs
Reviewed in the United States on October 5, 2025 by Freddie Freeloader
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank
Style: DOWN CUT
Works as it should
Reviewed in the United States on October 19, 2025 by EBanks
Size: 1/16" Dia - 1/2" CL -1/4" Shank
Style: DOWN CUT
Bits themselves are fine. The little plastic boxes/sleeves aren’t labeled - like every other vendor labels their bits.
Reviewed in the United States on April 26, 2025 by Lars
Size: 1/4" Dia - 2" CL -1/4" Shank
Style: DOWN CUT
Was using this bit in my router to flatten the edge of my 1.5" thick birch counters. After 2-3min, the bit exploded, and sprayed me with metal bits (see picture). Very dangerous
Reviewed in the United States on March 4, 2026 by Philip C.
Size: 1/2" Dia - 2" CL -1/2" Shank
Style: DOWN CUT
Nice down cut 1/2" router bit. I'm used to well ground cutters and coatings for routing and milling but this is a really great looking bit - all the grinding is very clean and smooth with razor sharp edges then they added the DLC finish - which always makes tool look impressive. The performance is good - on size cuts and very clean edges. While they do recommend this for everything from CNC to hand held routers, it is important to remember that this does push up on the spindle as it cuts down into the wood - if hand held, it takes a good solid grip and down pressure. The normal limitation of down cutting is that chip removal is more challenging in pockets and deep cuts - which can cause chips to recirculate, dulling the bit faster and diminishing the cut quality but on open cuts, this is a great bit for the price. Cuts in a variety of materials are nice and clean - including finish grade plywoods. Good value and works well
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Reviewed in the United States on June 10, 2025 by M Volle
Size: 1/4" Dia - 1-1/4" CL -1/4" Shank
Style: DOWN CUT
Created clean cut surfaces and the coating looks like it could give longevity.
Reviewed in the United States on August 8, 2025 by Bryan Jefferies99
Size: 1/4" Dia - 1" CL -1/4" Shank
Style: DOWN CUT
When I first got into CNC routing, I was equal parts excited and overwhelmed. It’s not just cutting wood - it’s software, hardware, woodcraft, and electromechanical engineering all rolled into one, with a steep learning curve and plenty of opportunities to mess things up. My instructors told me, don’t go out and buy a massive kit of bits right away - start with the essentials and learn as you go. Naturally, I ignored that advice and did the exact opposite. Now, I’ve got a bunch of questionable bit choices rattling around in a drawer, collecting dust. But if there’s one thing I did figure out early, it’s that a 1/4” downcut spiral bit is an absolute go-to when you need a mix of material removal and clean edges. I didn’t pick up this BINSTAK TAC-coated version until recently, but I’ve used plenty of downcut bits before - so I knew what to expect. What I didn’t expect was just how much better this one would perform. ✅ Pros ✔ TAC coating noticeably improves performance – Runs cooler, reduces spindle strain, and extends bit life. ✔ 1” cutting length is perfect for 3/4” plywood – No second pass needed, keeps top edges crisp. ✔ Faster, more efficient cutting – A repeat job finished a full minute faster in a 12-minute window. ✔ More forgiving than a compression bit – No need for ultra-precise depth settings to get clean results. ✔ Solid build quality – Feels stiff and holds up under normal CNC workloads. ❌ Cons ❌ Too soon to judge long-term durability – Haven’t run it through a full lifespan test yet. ❌ Not for deep pocketing or aggressive material removal – Like all downcut bits, chip evacuation is limited in deeper cuts. Final Verdict: This One’s Staying in the Kit I haven’t put it through a torture test yet, but the early results are undeniably good. This bit runs cooler, reduces spindle strain, and maintains speed without sacrificing edge quality - all while being easier to work with than a compression bit. 📷 (See the photo below—this product is the one with the TAC coating, and you can clearly see the difference compared to another great bit. Both are brand new in the image.) 5 stars—this bit is officially in the rotation (so to speak).
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Reviewed in the United States on February 19, 2025 by Daniel Patrick