mini die grinder(MSG-3BSN) Free Speed :65,000RPM Collet Size ... 1/8") Air Pressure Supply: 0.6MPA Size:143mm*17mm mini die grinder MSG-3BSN Technical parameter:Free Speed : 65, ... is applied in varieties moulds, hardware products, glass, crafts, accessories, circuit board extensively such as shoe mould, wheel mould, pen mould ... gradually.4.Ask professional staff to maintain the tools. mini die grinder