6mm Down-Cut Spiral Bit – 1/4″ Shank (AstraHP Coated)
6mm downcut spiral bit for CNC. Clean top edges in plywood, melamine, and MDF. Ideal for grooves, dados, and back panel work. AstraHP Coated Cut Diameter: 6mm Shank: 1/4″ Length of Cut: 1″ Overall Tool Length: 2-1/2″ Made In USA




Category: Down-Cut CNC Bits
This 6mm down-cut spiral bit features a 1/4-inch shank and an AstraHP coating, designed for clean, chip-free cuts in CNC routing applications.
- 6mm cutting diameter with a 1/4-inch shank for compatibility with standard collets.
- Down-cut geometry helps press material down during routing, reducing tear-out on the top surface.
- AstraHP coating provides a durable surface finish for extended tool life.
- Ideal for use with CNC machines where precise, clean edges are required.
- Available as SKU 425-DNC6MM from BitsBits.com.
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