These pipe clamps are great for all kinds of pipes up to 6600 lbs. With the simply flip of a lever, you can have it lock on, or unlock. No more rigging to get under the pipe. Just grab and go. It’s locked on with structure reaching past the halfway point so structure and the pull on the lifting eye is what keeps it from being able to fall out. You’ll no longer need to get your arms and hands in the mud. Stand tall and just tell the tool if you want it to lock on, or let go.