RotoZip Rotary Tool Bit Set - 5 Piece Multipurpose Cutting Bit Set, Drill Bit Diameter 1/8 in, Max. Speed 33,000 RPM, Shank Diameter 1/8 in, Overall Length 3 in, Bit Application Drywall, Plastic, Wall Tile, Wood, Primary Material Application Drywall, Plastic, Wood, Material High Speed Steel, Tip Style Cutting, Flute Length 1 in, Cutting Direction Right Hand, Number of Flutes 1, Cutting Depth 1 in, Tool Brand Rotozip Zip Bits are designed to cut material up to 1" thick All bits have a shank diameter of 1 by8" Provides everything you need to cut drywall, wood, plastics and wall tile Model Number: RZ-BITSET1