This Clamp is really just for ecology block sized precast materials. If you want an automated clamp that grabs blocks quickly, this is a good option. Skip the grabbing the eye that is meant to be used an unknown amount of times. just set the clamp down, and the next time you lift it will grab the block and away you go. Quick, easy, ASME B30.20 compliant as a clamp. Stop the slings dance. Get it moving safely and easily with the 1567 Block Clamp. We can drop ship it to your door.