Since 1923, Ridgid has remained the symbol of certainty to dedicated professionals of the expert trades. Every tool that bears the Ridgid brand is engineered to the same high standards of quality, strength and endurance, as was that first heavy-duty pipe wrench more than 80 years ago. Ridgid covers its products with a lifetime warranty against defects in material or workmanship for the life of the tool. The Ridgid 16963 3/4-Inch jaw for prepress is 40-Percent lighter and 33-Percent smaller than standard series jaws. This enables them to fit into tight spaces easily. They are only compatible with the 100-B compact series press tools.