This Composite bodied palm sander features a 3/32in. stroke finish. Weighs less than 2 lbs. Orbital action assures a swirl free finish. 6in. pad, Free speed 10,000 rpm, Overall length 7in., Spindle Thread Size 5/16in. - 24, Air Inlet Thread NPT 1/4in., Requires 13 cfm at 90 p.s.i.. Imported. One year manufacturer's warranty.