The ch hanson automatic c clamps are made from chrome molybdenum steel for excellent durability set forget allows it to be set at a desired tip pressure and for the jaws adjust automatically the handles are 15 thinner for easier grip and more power and are ergonomically designed for comfortable use easy squeeze release lever ensures a controlled release with no pinch flare models 6201 6205 10201 are fitted with swivel pads that provide a greater surface area of contact to hold material in p