Adjustable hole sawt
1/2 round shank
1/4" high-speed tool steel bit
This high Speed Steel single wing cutter is easy to sharpen and set up. Center pilot bits keep the tools on center for exact results. Max. speed 500 RPM. Large Circle Cutter for 1-3/4" to 7-7/8" diameter circles. Has 1/4" pilot bit and 1/2" diameter shank.