Copper material manufacturing ensuring maximum durability. Including a total of 10 models watch mainspring winder to meet your needs. It is an important tool for watch manufacturers and watch repair shops 4. A practical tool for watch maintenance personnel, jewelers or amateurs. Ergonomic handle is non-slip, easy to grip and convenient to use. Specifications: Condition: 100% Brand New Item Type: Watch Mainspring Winder Material: Copper+Steel Model Number: C07111 / 8500-1 / 8500-2 / 3135 / 2235 / 7750 / 2892 / 8200 / 2671 / 2000 / 2824 / 2836 There are 10 models, among which 3135 and 2824, 2892 and 2836 are the same size Package includes: 10 Watch Mainspring Winder 1 Wooden Box. If you can not get a rapid reply during holiday, please do not worry. You have 30 days to return it from the date it was received. Return must be in the original package. If you return for replacement.