FHC 2-1/2" Standard Plated Diamond Drill Professional Grade Sprays the unique intumescent property (expanding

the unique intumescent property (expanding when heated) means that as cable and pipe insulation is consumed by fire

one-piece constructed stainless steel frame with ground and polished corners

Meets AAMA 800-92

stair step trays made of steel

FHC 2-1/2" Standard Plated Diamond Drill Professional Grade Sprays the unique intumescent property (expandingThe SPDD Series Diamond Plated Drill Bits heavy layer of diamond coating enables this bit to drill many holes in glass when maintained and used properly. Glaziers Tip: Although plated, these bits can be sharpened one time with a dressing stone to expose some of the remaining diamonds and extend the working life. Other features include 3 8" shaft and a knock out hole for easy spent plug removal. All diamond bits must always be used with suitable