Features 1、High Efficiency: This pneumatic sander provides strong power, with eccentric high frequency reciprocating, and not easy to stop due to external resistance. 2、Eccentric Polishing: Elliptical motion around the center of a circle, the high frequency vibration and eccentric design ensure higher polishing efficiency. 3、Reciprocating Work: Adopting left and right reciprocating swing operation, with a left and right deviation of 3mm, ensuring more uniform and fast polishing. 4、Applicable Scenes: This straight line air sander is suitable for polishing narrow gaps, irregular workpieces, metal molds and accessories, wood decoration, etc. 5、1/4 Inch PT Intake: This pneumatic sander is equipped with 1/4 inch PT intake connector, ensuring stable and reliable connection without gas leakage. Specification Item Type: Straight Line Air Sander Model: YC-2621 Vibration Spacing: Approx. 3mm / 0.1in Air Inlet: 1/4 Inch PT Working Pressure: 0.5-0.7Mpa Free Speed: 14000RPM Package List 1 x Pneumatic Sander 3 x Polishing Heads 1 x Air Intake Connector 1 x User Manual