The Bosch EXPERT M12 Standard Press Jaw is a great choice for plumbers who use press tools to make press joints on all types of plumbing pipes. Rust, wear, and distorted profile geometry can damage press jaws and prevent them from making secure joints. Bosch have made the EXPERT Press Jaw Standard resistant to wear to ensure you can crimp press joints securely in any plumbing pipework. The press tool head is made from steel that can withstand the force of 32 kN. The steel that is used goes through laser hardening process, which means the press jaw resists wear and lasts long. Size 12 Contour M