Features: The watch case holder is used to secure watch cases while opening and closing waterproof backs. The case holder is useful for holding those hard to open watches, while using a hand wrench to open the case. The tool is used to minimize the risk of slipping and scratching the backs of watches. This tool can also be used as a micro-vice holder while working on the watch. 4 nylon pins ensure scratch-free work on the watch surface. 4 different positions for the pins on each side of the bracket A pair of 1 3/4″ long x 15/16″ brackets have (4) sets of (6) holes that take (4) movable posts. Spring loaded jaws open max dial 1″. Specification: Max jaw opening approx: 34mm/1.34″ Weight: 85g Size: 55mm*45mm*25mm/2.16″*1.77″*0.98″ Max jaw opening approx: 55mm Material: plastic + stainless steel Quantity: 1Pc Package includes: 1 x Desktop Clamp Table Vise