Item Details - BABY BOA STRAP WRENCH MECHANIC PLUMBER OPEN JARS EASILY

Used for many plumbing jobs, on cars and irregular shapes and provides over 2,000lb of pressure without marking the workpiece.
Both strength and flexibility are provided by the braided rubber strap, which fits into a slot in the handle of the tool and provides a perfect fit on the workpiece.
Capacity from 6mm (1/4in) to 100mm (4in) Diameter

Also great for people with disabilities. Opens bottles and jars with ease. Especially good for people with Arthritic hands with limited grip.