Roughneck Heavy-duty Gorilla Grippers are the safer, easier way to carry sheet materials and heavy bags. Enabling large and bulky items to be moved single handedly. Manufactured from heavy-duty aluminium with a comfort grip, the ingenious design uses two parallel pads to grip materials securely using their own weight as a locking mechanism. Suitable for all types of boards or sheet metal and also ideal for gripping the tops of large bags to carry sand, gravel, animal feed etc. Specification Max. Load 90kg (200lbs). This Roughneck ROU32600 will clamp easily to boards or doors up to 19mm for ease of movement around rooms or work site.