Stone Boss Premium Wet/Dry Bits for Granite, Marble, Onyx, Engineered Stone and all Similar Materials, Sizes 1" thru 2" with 5/8"-11 Threaded Arbor

Designed for fast penetration speeds with long life and No Chipping! Viper Supreme Stone Bits feature a diamond side coating with large cooling slots and produce fast, clean holes without chipping. Use for drilling granite, marble, engineered stone, onyx, terrazzo, masonry, concrete and all similar materials. Features strong laser-welded turbo segments with heat-treated steel cores that are designed to withstand the demands of dry drilling.

• May be used for wet or dry drilling.
• Use with low speed drills or variable speed grinders and polishers (500-2,500 RPM).
• Features 5/8"-11 threaded arbor with wrench flats for easy on/easy off operation.
• Overall length is 3 1/2 inches.