Parameter Information: No load Speed: 25000 rpm Air inlet Size: 1/4 Inch Working Pressure: 70 - 100 Psi Air Consumption: 4 /6 cfm Material: Metal + Stainless Steel Type: Straight shank pneumatic grinding machine Min.Hose Diameter: 3/8" Features: - Durable and lightweight die cast aluminium body. - High-quality, spare parts are data processing, high accuracy. - Convenient one hand operation with safety trigger for easy and safety start. - Compact, lightweight design for easy maneuverability. - Good choice for smoothing sharp edges, deburring,polishing and grinding. - Professional grinder kit giving complete flexibility for most grinding and polishing needs. - Quick chuck design, chuck can be quickly converted between 3mm-6mm.