CRL 4 mm PDT Belgian Series Metal Bond Diamond Drill Glass Routers Bits & Accessories This is very popular tool

This is very popular tool for this type of work throughout the industry

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This CRL Replacement Ink Felt Cartridge is a black ink refill replacement for our catalog number 3133 Glass Counter Pen

There should be no metal or wood to glass contact

CRL 4 mm PDT Belgian Series Metal Bond Diamond Drill Glass Routers Bits & Accessories This is very popular toolDesigned for High Volume Glass Drilling Full 3 8" (10 mm) of Diamond Cutting Surface Threaded for Use in Belgian Type Drill Chucks CRL PDT Series Metal Bond Diamond Drills use a special diamond and brass bond for maximum performance in glass. Metal bond drills offer the greatest life, 1000 to 2000 holes in 1 4" (6. 4 mm) glass with proper maintenance and the use of a wet Sharpening Stone to expose fresh diamonds, of any type of diamond drill. PDT