Versatile curved jaw also features integral wire cutter Angled tooth pattern for a better grip Knurled adjusting screw turns easily by hand or with a hex key inserted into the hex key receiver on bottom of screw After initial grip is set, pliers can be tightened further by turning the adjusting screw with a hex key Crescent locking pliers are made to an exacting standards that result in improved durability and long-term performance. They meet stringent ASME B107.24 and B107.36 standards, as applicable, including standards for strength and maximum jaw capacity. All Crescent locking pliers have a cushion grip trigger release for easier opening and large hex key recess for additional leverage when tightening. The head and body also have a narrow profile necessary for work in tight and confined spaces.