Sold individually for $20.00 each.
A&M Instruments Product Code: 516twistdrill
Grit: 120 Coarse
Head Diameter: 0.312" or 5/16"
Overall Bur Length: 4.5" or 4-1/2"
Shank Diameter: 0.312" or 5/16"
Diamond coating extends 0.50" or 1/2" from the tip.
For almost 40 years customers around the world have depended on A & M Instruments for high precision Diamond Cutting Tools, CNC Machining, and Swiss Screw Machining. A & M Instruments manufactures diamond rotary tools for endless industrial applications including glass and stone, wood, metal, and plastics. A & M Instruments Quality Diamond Tools fit rotary power tools such as air tools, drills, rotary tools, and routers including brand names such as Dremel®, Proxxon®, Foredom®, Black and Decker®, Rotozip® and others.
Note: Always wear proper eye protection and gloves when using any cutting or grinding tool. All diamond tools last longer if a lubricant or coolant is used during cutting or grinding.