A&M Instruments Stoneworking Dupont 3/4" Radius Plated Diamond Router Bit for Granite or Marble - DUP 0.75Sold individually for $100. 00 each. A&M Instruments Product Code: DUP 0. 75 Material: Granite or Marble Grit: 35 40 Coarse; 120 140 Fine Head Diameter: For 3 4" Radius Shank Diameter: 1 2" Used for edging 3 8" to 1 2" thick marble or granite (see product description). Diamond metal bond impregnated type for granite, nickel plated type for marble. For almost 40 years customers around the world have depended on A & M Instruments for high precision

45 each/ box of six

Fine 8368-021

Old ISO #: Medium 835-009

Coarse 4378-0065C

Medium 801-014

Coarse 806 314 166 534 017

FGCAR7404 - $4

Coarse 806 314 173 534 017

A&M Instruments Product Code: HP909-055

A&M Instruments Product Code: F20

insert the accessory bit all the way into the tool and then back it out slightly before tightening down

New ISO #: Medium 806 314 002 524 016