The Rotozip ZB10 Outlet Standard Point Zip Bit offer smooth, clean cuts through drywall. These 1/8-inch zip bits are ideal for basic drywall cutouts when using RotoZip spiral saw power tools, Cuts Through Drywall Up To 1 in Thick, For Outlet Boxes, Windows, Cabinets, Doors & Lights, For Use With rotoMite Or SpiraCut Roto Zip Power Tools. This pack includes 10 bits, Designed for slower, more controlled cuts in drywall. For use with RotoZip spiral saws (item#s 150692, 150693, 150694 and 150695). 10Pack. U.S.A.