Ridgid R1001 23983 4-1/2-inchGrinder Ridgid r1001 6-Ridgid R1001 23983 4 1/2" Grinder View larger Overview The 4-1/2-inch angle grinder features a 10 amp motor with precision cut gears and sealed bearings for increased durability. This grinder has auto-stop brushes for extended motor life. Designed with a convenient two position side handle for added versatility. It also offers a spindle lock for quick and easy wheel changes.