Neiko RIDGE30059A Industrial Grade 25000 Free Speed RPM Air Die Grinder, 1/4" Compact body size with a 1/4-inch collet constructed of heavy duty stainless steel to withstand high impact speed Lightweight, easy-to-hold build at 1.2 pounds is designed for comfort and prevents hand fatigue during long interval sessions Built-in rear exhaust air flow system connects to compressor to produce low noise output for limited distraction Powerful motor operates at a high free speed of 25,000 RPM for fast and efficient sanding results Soft touch flipper lever allows precise control of speed and prevents accidental startup