we always put the quality at the first,Each of our products will undergo strict quality control before shipment, Made of Stainless Steel material, longevity, good toughness SizeOpening 30MM models: Length is 34mm/1.3inches, width is 24mm/1 inches, height is 30cm/1.2inches, opening is 3.0cm/1.2inches. Packing includes4 x Stainless Steel C Clamp. This C-clamp is specially designed for woodworkers, welders, construction workers, photography, or do it yourself. The clamping is firm and the relief is easy. heavy-duty design of the clamp can ensure that the clamped object will not be easily deformed. Our welded and wooden clips, with their stainless steel frames and steel clamping screws, provide a safe, unshakable grip that you never have to worry about