Features 1、Efficient Use: This air die grinder has 22000rpm high no load speed, which enables stable working performance with higher efficiency. 2、Reliable Work: The pneumatic die grinder with muffler has low work noise and small vibration, compatible with 1/4in and 1/8in collet. 3、Broad Utility: Suits perfectly for local grinding of key areas, removal of solder joints and rust spots on metal products and so on. 4、Better Design: Combining ergonomic zinc alloy body and comfortable handle with red protective cover, the manual operation is simpler. 5、Easy Carrying: Comes with a light weight and a compact size as well, both the daily storage and carrying are very convenient. Specification Item Type: Air Die Grinder Model: YDE 4975 Material: Zinc Alloy Collet Size: Approx. 6mm / 0.24in or 3mm / 0.12in. No Load Speed: 22000rpm Air Pressure: 90psi, 6.3kg/cm² Air Consumption: 4.0cfm Air Inlet: 1/4in Package List 1 x Air Die Grinder 2 x Wrench 1 x Air Inlet