Ingersoll Rand's 315G Straight Line Air Sander has a twin piston design that keeps extra power in reserve to prevent stalling. Tackle tough sander jobs like smoothing down body filler or shaping and leveling large flat surfaces. The straight line pneumatic sander has a pad size of 2.75" x 15" and provides 3000 reciprocating strokes per minute. Ergonomic hand grip, lighter weight body and low vibration increase comfort while operating, keeping you working longer and finishing tasks more efficiently. Fast action paper clamps allow for quick change overs. Paper size should be 17.5" long to accommodate its wrap around clamps.