RIDGID introduces the 8 Amp Corded 4-1/2 in. Angle Grinder. This 4-1/2 in. Angle Grinder has a durable 8 Amp motor to ensure longevity in the life of the tool and is durable enough to last as long as the job requires. With free registration, this tool is covered for life. FREE Parts. FREE Service. FOR Life. The 4-1/2 in. Angle Grinder includes a Wheel Guard, a Grinding Wheel, a Side Handle, a Flange, a Clamp Nut, a Spanner Wrench, and an Operator's Manual.