Description Adopting great quality silicone material, this watch case opener can let you use for a very long time. Though it is simple in design, it's so practical when you use it. The excellent workmanship of this opener will bring you a good using experience. Easy and convenient to use, safe to your watch case, it is a useful watch repair tool. Features - Color: yellow, blue, red.- Material: silicone.- Size:6.50X6.50X6.50cm/2.55X2.55X2.55inch.- This friction balls is a wonderful alternative to the standard watch case opener.- Suitable for any tool kit whether you're a professional watchmaker or a watch hobbyist.- Easy to operate and use. Hold the watch in one hand and in the other hand, press the friction balls onto the back of the watch.- It makes you open the watch back case in an easy, precise, and safer way, will not hurt your hands or watch case.- It's smart design allows it to fit and evenly grip the surface, giving it more strength yet never scratching your watch. Packing list: 3 x Watch Case Open Balls