ITEM NAME:Watches Back Case Watchmaker Opener Wrench Remover Watch Repair Tool (Blue) Product Description Description: Portable Watch Tools Watches Back Case Watchmaker Opener Screw Wrench Remover Watch Repair Tool Kit Feature: It is suitable for screw-in watch bottom cover. It can open about 75 mm Jack distance. Most of the screw-in cover distance is enough. Usage: Two heads aligned with the jack of the back cover of the watch can be opened by direct rotation. Specification: Material: Plastics Size: 80*45mm/3.14*1.77'' Weight: 28g Color: Blue Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 x Watches Back Case Opener.Included: 1 x Watches Back Case Opener. It is suitable for screw-in watch bottom cover. It can open about 75 mm Jack distance. Most of the screw-in cover distance is enough. Usage: Two heads aligned with the jack of the back cover of the watch can be opened by direct rotation.