Features:Good quality and practical, a perfect set of tools for polishing and grinding. Compressed air for power, energy saving and environmental protection. This air wet sander can be used with water, low noise and less dust. The speed of air sander can reach to 10000rpm, strong power output, good polishing performance. Suitable for grinding and polishing of dry and fragile articles and materials that are not resistant to high temperature. When pneumatic water grinding works, it can be cooled and humidified by water to protect the workpiece to be processed. Specification:Model: SY8127Speed: 10000rpmAir consumption: 4.0cfmDisc size: 5"Inlet: 1/4"Air pressure: 90psiWater pipe diameter: 4*6mm/ 0.16*0.24inWater pipe length: 5.5m/ 18.0ftWeight: Approx.1100g/ 38.8ozPackage List:1 * Pneumatic Water Sander1 * Inlet joint1 * Water pipeNote:Please allow slight error due to manual measurement. Thanks for your understanding.