Quick-adjust rivet allows one-handed fast, easy adjustment of plier jaws. Features a split ring for securing the tool when working at height. 1-3/4-Inch (44 mm) maximum parallel jaw opening for a range of applications. Smoothly adjusts between six machined tongue and groove jaw positions. Secure tongue and groove design for non-slip grip, even with heavy pressure. Robust teeth for sure gripping action. Induction hardened jaws for long life.