Name: Air Die Grinder Model: AG-303 Air Pressure: 90psi Collet Size: 6mm Free Speed: 23000rpm Air Consumption: 4cfm Weight: 0.38kg Air Inlet: 1/4BSP Name: Air Die Grinder Model: AG-303 1PC Air Die Grinder 5PCS 6mm Mounted Grinding Stones 5PCS 3mm Mounted Grinding Stones 2PCS Hand Wrenches 1PCS Nipple 1PCS 3mm Collet.