ITEM NAME:Hot Watch Battery Change Back Case Cover Opener Remover Screw Wrench Tool I5I1 100% brand new and high quality This watch case tool wrench opener is suit for open back case on most watches. Simple to use and fully adjustable and fashional. Color: Blue Material: Metal Jaw distance adjustable from 8mm to 57mm Size: Approx.(L*W*T)6.9 x 2.8cm(Approx.) Adjustable jaw distance from 0.39inch to 1.97inch (1cm to 5cm) Quantity: 1Pc(Not include the watch) For opening most screw back cases. A fully adjustable case opening tool. Simple design with thumb screw to adjust diameter. Very convenient and easy to take everywhere and easy to use. Package Included: 1 x Watch Case Tool Wrench Opener Note: 1. this tool is suitable for the screw cap table, cannot be used in the gland table (that is stuck open unscrew the bayonet table) 2. Please allow 1-5mm error due to manual measurement. 3. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness, pls understand, Thank you..This watch case tool wrench opener is suit for open back case on most watches. 1 x Watch Case Tool Wrench Opener. For opening most screw back cases. this tool is suitable for the screw cap table, cannot be used in the gland table (that is stuck open unscrew the bayonet table).