1. comfortable, design for easy maneuverability 2.90 degree angle head allows flexibility in confined areas 3. Excellent for high speed blending, smoothing, porting and deburring in confined areas4.Lock-off throttle to prevent accidental start up5.Suitable for grinding, correction, mold, hardware, die-casting, furniture, welding and other industries, with strong strength, comfortable hand, easy to operate, etc. Color: silver Material: Aluminum alloy Speed-no load: 20000rpm Working pressure: 90psi Collet size: 3.15mm, 6.35mm Intake interface: 1/4BSP Average air consumption: 4cfm Package Contents: 1* grinding machine 2* wrench 2* chuck 4* scouring pad 1* 2 inch tray Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.