Giới thiệu Bóng ma sát hỗ trợ sửa chữa đồng hồ chuyên dụng
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100% Brand new and high quality Innovative back case of watch repairing tool, enable you to open watchcase easily, precisely and safely without scratches. Its smart design allows it to fit and evenly grip the surface, giving it more strength yet never scratching your watch. Easy to use, simply squeeze, press, then screwing Perfect for any toolkit whether you're a professional watchmaker or a hobbyist This is a watch repair tool, not a toy ball (maybe you can make it as a tool and a toy), only use to open the screwthread back watchcase. Color: we have many other colors, and we send the item by random. How to use the opener ball? Push and squeeze the ball, make friction between the ball and the back case, and then rotate the ball to the case "open" direction. This tool does not like other metal opener tool, it will never scratch or damage your watch. Specifications: Color: Blue,Red,Rose,Green,Yellow(Random) Material: Rubber Diameter : 6 cm Weight: 40 g Quantity:1 psc Package Includes: 1* Back Case Opener Ball