The RIDGID® 690-I Hand-Held Power Drive Pipe Threading Machine die head retaining system has a simple twist and release for the 1 1/2″, 2″ Die Heads and Die Head Adapter. Lightweight and portable for maintenance, repair and service plumbers. Over-molded handle and contoured grip provide optimal control. Screw-in brush covers improve serviceability. Durable die cast gear housing and fiberglass reinforced plastic body to withstand demanding job site conditions. Dual “V” Jaw Support Arm firmly prevents slipping.