Knurled adjustable screw at the base allows fine control and adjusting even in oily conditions. Drop forged Steel and heat treated for strength and durability and the jaws are serrated for maximum grip. The design has been made from 46 rivets making it sturdy and you can unlock the jaws by a simple squeeze of the release handle They all feature quick release levers for rapid action and thumb screw knobs to adjust lock jaw capacity Supplied in easy store wrap Set Includes; pliers: 3 x Round Nose Locking Pliers 185 x 55mm 5 x Round Nose Locking Pliers 235 x 65mm 2 x Welding Locking Pliers 235 x 65mm 2 x Round Nose Locking Pliers 135 x 45mm 2 x Welding Clamp Locking Pliers 280 x 140mm 1 x Medium Locking Pliers 1 x Small Locking Pliers