Feature: 1. PROFESSIONAL TOOL: Watch screw back case opener is designed with excellent stainless steel and is a must have tool for professional watchmakers and repairers. 2. MULTIPLE SIZES: Watch opener kit includes 8 dies of different sizes, which is suitable for IW watch models and reduce the risk of slipping and scratching. 3. PREPAIR TOOL: Watch back case opener suitable for opening and closing screw back covers, especially on waterproof and grooved watches. 4. EASY TO USE: Simply attach the adapter to the handle, choose the appropriate die, and turn the handle to open or close the screw back case cover. 5. HIGH PRECISE: High accuracy design, better fit the slot of the watch cover, with non slip hoop, which can be rotated at will without slipping. 6. PORTABLE AND CONVENIENT: Watch screw back case opener is compact and lightweight, comes with a storage case, and is easy to carry and organize. Specification: Item Type: Watch Back Cover Opener Material: Stainless steel Size: 500113-5 prongs 39550X-8 prongs 37772X-6 prongs 37771X-6 prongs 38810X-8 prongs 32701X-6 prongs MARK 32701X-6 prongs SPITFIRE. Package List: 1 x Handle8 x Dies1 x Adapter