Features:1. Watch extension bar is special designed, can perfectly replace the old or broken one2. Stainless steel watch repair kit is made of quality material, sturdy and durable for long term using3. Crowns gaskets repair replacement tool is wonderful and practical tool for watch makers and watch repairing worker4. Professional watch repair kit is high hardness, wear resistant, easily to maintain the performance of your watch5. There are different sizes available, can meet your different need for watch stem extenderSpecification:Condition: 100% Brand NewItem Type: Watch PartsMaterial: Stainless SteelPackage List:1 Box of Stem Extender + Crowns