Ball and roller bearing construction. Side mount handle mounts on left or right side. Spindle lock for easy wheel changes, 5/8" - 11 spindle size. Paddle switch for comfortable operation. 8' rubber cord. 7A, 12,000 RPM. Includes side handle, 4-1/2" x 1/4" metal grinding wheel, guard assembly, backing flange, clamp nut, and spanner wrench.