FUJI Horizontal Pneumatic Grinder sold with removeable wheel guard assembly and variable speed lock-on throttle control. Speed 7200 RPM, Max grinding wheel size 5" x 3/4" X 1/2" spindle size, flange diameter 2". OAL 16", WT 6.6 lbs, Air 35-40 CFM. Wheel changing wrench not included. Fuji Air Tools Co LTD, is a well respected manufacturer known worldwide for quality tools and machinery.