The Boa Aluminium Strap Wrench is the orginial and best strap wrench. Useful for many jobs including plumbing, automotive, A/C installation/maintence, pool, pond and oil filtres. 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 work piece. Provides over 2,000lb of pressure without marking the workpiece with a pro use capacity of up to 305mm. Capacity: 10 (3/8in) to 305mm (12in).