The Automatic Tool Range from C.H. Hanson are 7x faster, 2x stronger & 100% easier than other tools of their type. These Automatic Groove Pliers have a patented mechanism which maintains parallel jaws for optimal grip. They will grab any size without need for adjusting, & are fully automatic which means that they enable a true one-handed use. The handles are made from prolypropylene, meaning that they are resistant to solvents. The CHH20600 Automatic Locking Groove Pliers have the following specifications: Handle type: Soft-grip Length: 16.5cm (6.5 inch)