This medium-duty bar clamp is made from strong and durable engineering grade plastic. It is capable of evenly distributing up to 153kg of sustained clamping force. The robust I-Beam structure and C45 rail reduces unwanted bending. The TPU protective cushions safeguard the workpiece from marking and damage. One-handed operation is easy, thanks to the quick release trigger. There is also a quick change button to convert the clamp to a spreader. It is designed with long handles to enable better leverage for reaching higher pressure easily.