General Tools 1566 Rubber Strap Wrench, 6-Inch ADJUSTABLE RUBBER STRAP WRENCH - with locking mechanism provides leverage on odd shaped, hard to grasp objects. Tough thin 3/4in. wide, strap works well in tight spaces. OPENS/TIGHTENS - use the adjustable rubber strap wrench to tighten or loosen jar lids, bottles, pipes, any round or oblong objects. It can even be used to remove oil filters! SLIP RESISTANT GRIP - helps users of all ages with small/large, arthritic, elderly hands easily open or tighten items. NON-MARRING- the rubber strap, unlike metal wrenches, does not damage surfaces. VERSATILE- can be used in the home, car or workshop.