The new line of Pipetech Pneumatic (Powered and Non-Powered) Self-Centering Wedge Mandrels combine the proven durability and power of a wedge design with the reliability and ease of operation of pneumatics. The “self-centering” technology improves efficiency and minimizes down time by preventing “mandrel roll” in the pipe during the bending process. Available from 10″ through 60″. Powered (self-propelled) model standard on 20″ and above sizes.