PERFECT REPAIR KIT: For very common tasks such as opening the back of the watch, adjusting the bracelet, changing the battery of the watch, gaskets, adjusting the bracelet, etc. EASY TO OPEN CLASSIC AND OVERSIZED WATCHES: Oversized case key opens up to 52mm Ideal for professional or home use. This is the perfect gift for all watch lovers Complete Kits and Versatility: 147 professional and complete watch repair tool kits. With this versatile watch accessory, youll be repairing your watch like a professional watchmaker in no time. Ideal for beginners and professional watchmaker repairs: you can use this complete kit to repair your watch and not only help you avoid a trip to the watch shop. Watch repair, save money and bring you joy in the repair process, easier and easier to use than you think. EASY TO STORE AND CARRY: With a black nylon zipper case, it is easy to store, not easy to lose tools, and get the job done anytime, anywhere.