Set includes: 1 ea - 1" & 2" Rotary Shaper and 1" & 2" Replacement Blade. * Designed for low speed power shaping without clouding the air with dust. * Improved design tooth pattern to minimize clogging. * Works great with drill press, razor sharp teeth that cut 10 times faster than similar shaping tools. * 2500 RPM MAXIMUM Speed - Not designed for use with router.