This friction ball is alternative to the standard watch case opener High positive and hand feel. Innovation tool, makes you open the watch in an easy, precise, and safe way for any however the maximum tough water resistant case backs. It's sensible design permits it to fit and evenly grip the surface, giving it extra strength yet via no potential scratching your watch. Easy to use; easily squeeze, press, then turn. Perfect for any toolkit whether or not you are a legitimate watchmaker or a hobbyist. colour:Random color(Note: Random color, do not settle for the desired color.) Material:rubber size:Approx. 7 cm Package Contents: 1 * Watch Case Open ball Only the above package content, different merchandise shouldn't included. Note: Light taking pictures and varied reveals could cause the color of the thing within the picture somewhat different from the real thing. The size allowed error is +/- 1-3cm.