1. Effectively prevent the watch from being damaged when the cover is opened2. 5538 cap opener cap opening size: 18.5 / 20.2 / 22.5 / 26.5 / 28.3 / 29.5mm3. The 5538 cap opener is used to open the gear-shaped back cover and can be installed on the cap opener4. Scope of application: watch repair5. List of 5700 cap opener: adjustable watch holder (No.5674), detachable adjustable jaw holder (No.5675), 12 jaws (6 small circles/large circle/square/half circle 2 each) , 4 fixing screws, 8 chucks (2 each for 6/11, 13/15, 17/19, 20/22), 4 fixing seat chucks6. Size: 5538 cap opener: 14x12x3cm, 5700 cap opener: 25.3x10.2x32cm7. Weight: 5538 cap opener: 110g, 5700 cap opener: 2120g

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