193-6423600 Features: -Has a rubber covered pad and cam of relatively smooth metal conditioned to grip tightly.-Lifts heavy plates with minimum marring.-100pct proof tested with certificate of test attached to each clamp.-Grip Cap.: 1/16 in [Min], 3/8 in [Max].-Working Load Limit: 1/2 tons.-Locking Type: Load Activated.-Mounting: Fixed Eye.-Material: Forged Steel.-Type: Plate Clamp.-Wt.: 6 lb.-Price is for 1 Each.-Testing and approvals:.-100pct Proof Tested. Specifications: -Should be used to lift plates with a hardness over 43 Rockwell C/400 Brinell.