I bought this item to lift 15mm OBS boards up on a roof and it worked like a charm. The catch and release mechanism works smoothly. I don’t think it would work with anything thicker, though.
EXCELLENT PRODUCT & WELL WORTH THE VALUE FOR THE MONEY SHOULD OF BOUGHT 1 YEARS AGO SAVES ALOT OF TIME & EFFORT WITH 1 OF THESE YOU WANT BE DISAPPOINTED IF YOU ORDER 1 OF THESE LIFTING CLAMPS
Clamp arrived on time and was in perfect condition. It has made moving large steel plates around my shop easy. I was happy with purchase and would recommend it to others.