A&M Instruments Industrial Diamond 0.25" Counter Sink - 4664-0250Sold individually for $22. 45 each. A&M Instruments Product Code: 4664 0250 Grit: 120 Coarse Head Diameter: 0. 25" Head Length: 0. 10" Overall Bur Length: 1. 5" Shank Diameter: 1 4" The angle of A & M Instruments counter sink is 82 degrees. 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

Coarse 806 316 001 534 010

A&M Instruments Product Code: B3

Coarse 6837-015

Medium HP859-012

Old ISO #: Fine 8839-011

New ISO #: Medium 806 314 196 524 010

Coarse 806 314 257 534 017

See-through

Medium 806 314 247 524 014

A&M Instruments Product Code: HP812-083

Coarse 806 314 170 534 013

A&M Instruments Product Code: HP6825-065