Feature:1. Watch Hairspring Repair: Easy to use, exquisite watch repair parts, saving you expensive repair costs.2. Portability: Small and convenient, convenient to store and carry, and convenient to transport at the same time.3. Alloy Material: Durable wheel can effectively resist oxidation and rust, and has a long service life.4. Durable Base: The base is made of high quality plastic to ensure maximum durability.5. Professional Tool: One of the professional watch repair tools, suitable for repairers and amateurs.Specification:Item Type: Hairspring Holding ToolMaterial: Alloy, PlasticSize: Balance Wheel Diameter: 49mm / 1.92inBalance Wheel Height: Approx. 22mm / 0.86inBase Diameter: Approx. 79mm / 3.11inBase Height: Approx. 15mm / 0.59inNeedle Punch Length: Approx. 60mm / 2.36in(Manual measurement, there is a little error)Needle Punch Model: 0.2mm, 0.5mm, 0.6mm, 0.8mmProduct Color: Green, GrayPurpose: Used to place the balance wheel of the watch movement, and the watch needle punch inside. Package List:1 x Base1 x Balance Wheel Seat1 x Plastic Storage Box4 x Needle Punch2 x Connector