The C.H. Hanson Automatic Groove Pliers have a patented mechanism which maintains parallel jaws for optimal grip. They will grab any size without need for adjusting, and are fully automatic which means that they enable a true one-handed use. They are fitted with soft grip handles, that are made from prolypropylene, meaning that they are resistant to solvents.
The Automatic Tool Range from C.H. Hanson are 7x faster, 2x stronger and 100% easier than other tools of their type.