Spring loaded design; For work where you don't want to scratch it! Special resin is attached to the jaws Prevents scratches on plating items, cosmetic nuts and other objects that grab them. Maximum 1.8 inches (46 mm). It can hold up to a wide object. The handle uses a soft grip that is easy to fit in your hand. The metal part is coated with cationic electrodeposition, so it is resistant to rust and durable. The screws are made of rust-resistant and high-quality stainless steel.