Ryobi ZRP531 18V Speed Saw Rotary Cutter (Tool-Only) Certified Refurbished 30 percent more compact design enhances user comfort while cutting (compared to the P530) 27,000 RPM for precision cuts Accepts 1/8 in. and 1/4 in. bits for a variety of cutting applications Tool-less depth setting for fast and easy adjustments for making cuts in a variety of materials Spindle lock for easy single-wrench bit changes