The 7345 is a 5 In. variable-speed random orbit sander. The sander is 4.5 A, AC only, and has an electronic variable-speed dial with 2,500-6,800 OPM. The 7345 has random orbit, swirl-free sanding/polishing action and includes 5 In. proprietary counter balance for use with 5 In. sanding/polishing pads. It accepts 5/16 to 24 spindle thread accessories. The sander features two-position (Left or right) removable side handle for greater comfort and control and has a compact lightweight design. The 7345 is 100% ball and roller bearing construction.