Hands-Free, Multi-Purpose Safety Clamping System.
The Hands-Free Safety Clamps blend the standard clam clamps with a bottom rod wrench and top set of breakout clamps. The Safety Clamps provide an 8.8" ID bottom clamp which doubles up as a holder for the rod wiper. It can even grip PVC sewer pipe without damaging it for simple casing installation, great for geothermal. In the middle is a rod/auger holding plate to stop the drill string from turning or dropping down the hole. The top clamps can grip 2.5" OD pipe to 8.8" casing with a combined gripping force of over 40,000lbs with a breaking out torque of up to 17,000 ft.lbs.