Complete Kit & Multifunctional Professional Kit of watch repair tools, very suitable for both beginners and professional repair watchmaker. Includes tools with different functions: watch case back opening tool knife, watch cover opener knife, watch band spring bars link pins Perfect set for very common tasks like opening watch backs, changing watch batteries, adjusting bands, and more Economic design You can repair watches with this complete kit yourself, not only helps you save money, it also brings you pleasure during the repair process. It is easier to use than you think! Simple to use First, need a soft cloth or towel is a great surface to cushion the watch while you are prying off its back. Second, choose right size of type watch back case opener, only simply place blade under the case back gap to pry off Easy to Carry It's a portable set with a plastic bag, where the tools are placed very neatly. Small and light, you can transport it to repair your watch anywhere you want. Specification: The First Type Watch Case Back Opening Tool Knife: Length 11.3cm, Wide 16cm, Handle thickness 5mm, Blade thickness of about 0.2mm The Second Type Watch Cover Opener Knife: 4 different sizes of open tool : 1, Length 8.2cm, wide 0.4; 2, Length 8.2cm, wide 0.6; 3, Length 8.2cm, wide 0.9; 4, Length 8.2cm, wide 0.6 Material: Stainless steel and plastic Color: Yellow Package Included: 1 x The First Type Watch Case Back Opening Tool Knife 4 x The Second Type Watch Cover Opener Knife 8x Spring bars