High performance air angle sander and polisher lets you tackle tough sanding jobs without the weight of an electric tool. Weighs only 4.4 lbs., it is easy to handle – essential for working on delicate surfaces. Dual position handles add additional ease and stability. Powerful 4,500 RPM with low air consumption of 3.5 CFM at 90 PSI. Heavy duty ball bearing provides exceptional balance and reliability. Muffled exhaust design makes for quieter operation without sacrificing performance. Sanding/polishing speed: 4,500 RPM, spindle thread size: standard 5/18 in. x 11 UNC, average air consumption: 3.5 CFM, operating pressure: 90 PSI, air inlet: 1/4 in., recommended hose size: 3/8 in.