CRL 2-1/4" PD Series Metal Bond Diamond Drill Caulking & Urethane Heaters/Coolers Overall length is 15-3/8" (391

Overall length is 15-3/8" (391 mm)

Thickness is 6 mils

we have selected the tungsten carbide that incorporates the best qualities for glass cutting

They should always be used in true running machines on flat glass surfaces

They are tapered on each end for use in six different joint widths

CRL 2-1/4" PD Series Metal Bond Diamond Drill Caulking & Urethane Heaters/Coolers Overall length is 15-3/8" (391Straight Shank and Belgian Thread Type 3 8" Diamond Matrix Depth Two Mounting Styles to Choose From: Straight Shank or Belgian Thread PD Features 3 8" x 1 3 8" (10 x 35 mm) Shaft CRL PD and PDT Series Metal Bond Diamond Drills use a special diamond and brass bond for maximum performance in glass. Metal Bond Drills offer the longest life of any type of diamond drill; 1000 to 2000 holes in 1 4" (6 mm) glass with proper maintenance and the use of a wet