Roto Zip GP16 ZipBit Guide Point Drywall Cutting Bit, 1/8" x 2", 16-PackThe Rotozip 1 8" Drywall Guide Point Cutting ZipBit is perfect for controlled drywall cut outs when used with your RotoZip Spiral Saw power tool. The guide point tip traces around outlet boxes and can lights. Zip Bits allow you to cut material up to 1" thick. For use with RotoZip Spiral Saw power tools. Size: 1 8" x 2 x 1 1 2" Controlled cuts in drywall Guide point tip traces around outlet boxes and can lights The original spiral saw bit For