ITEM NAME:Watch Back Case Opener Wrench Screw Remover Tool Kit Set Standard Switch Valve Product Description Description: High Quality watch opener, designed to remove the back lid from watch without marks or scratched. This tool is ideal device for replacing batteries for any other watch repair Features: Key for waterproof watch-cases, with 4 sets of clamps (round, flat, square, triangle) High quality all steel construction 3 adjustable jaws Easily adjustable for various case dimensions (18mm to 60mm) Portable handy box set design, easy to carry Material: Steel Clamps includes: 3 x Flat, 3 x Square, 3 x Triangle, 9 x Round Dimensions: Approx. 16.5 x 7 x 1cm (L*W*H) Included: 1 x Watch case opener tool set.This tool is ideal device for replacing batteries for any other watch repair. 1 x Watch case opener tool set. Portable handy box set design, easy to carry. If item is defective after 3 months, you can still send it back to us.