The Carl Stahl rectangular profile clamp is designed for transporting goods> it is made of steel, wood and concrete. The user must keep the surface oil-free to make certain there is a safe grip. The friction factor between your load and pad can be no less than 0.75 μ. There are special versions available if you have an oily or surface. The crane jaws are fitted with wear-resistant protective pads. The clamps have an open locking device. They are available in different sizes, grab ranges and load capacities. Specially hardened jaws are available for oily/wet surfaces for an additional cost.