Renfroe SX Locking Type Lifting ClampsRenfroe's Model SX Locking Type Lifting Clamps have been designed for the purpose of lifting and transporting angle in both fabrication and steel erection applications. Available in 2t and 4t safe working loads, the model SX incorporates the brands signature 'LockOpen LockClosed' technology, enabling the easy attachment and removal of clamp to plate. SKU Capacity (tons) Shackle Hole Dia. (in.) Weight (lbs) Clamp Height (in.) Clamp Length (in.) Clamp