1Bag 0.5/0.6/0.7/0.8mm Watch O-Ring Waterproof Rubber Watch Back Cover kets Watch Repair Tool For Watcher Tools Accessory

Features:O-shaped watch ket made of high-quality rubber material, wear-resistant and corrosion-resistant.Great repment for watch back kets for keeping your watch water resistant.Suitable for watchers and watch repair workers.A set of rubber watch kets mounted on the case back to cover the gap between the sp and the movement.Good waterproof effect, suitable for watch maintenance and DIY watchers.Specification:Material: RubberSize: 1.97*2.76in/5*7cmColour: BlackUses: water seal, dust seal, fixed sealPackage Includes: 1 packNotes:Please allow small errors due to manual measurements.Different monitors may display slightly different colors.