This is High Quality Watch Case Cover Opener Screw Removal. By using this case opener, you can easily open the back case of your watch. Whether you're a professional watch repairer or you just want to change the batteries in your watch without the hassle of taking your timepiece all the way to a jeweler, this solid metal wrench enables you to remove the back casing from your watch to do the job.Features:Two feet Watch opener copper Watch back cover wrenchYou can easily safely open a watch back cover using itSuitable for open Back case on Most WatchesSimple to Use and Fully AdjustableMaterial: CopperSize: 37mm feet distance(max)