CRL 2-1/4" PD Series Metal Bond Diamond Drill Caulking & Urethane Heaters/Coolers They should always be used

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

The flexibility afforded by this unit is unmatched by other drill machines with built-in motors that must be disassembled if service is ever needed

It goes on smooth and evenly

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

where most of the stock removal takes place

CRL 2-1/4" PD Series Metal Bond Diamond Drill Caulking & Urethane Heaters/Coolers They should always be usedStraight 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