Feature:1. Watch movement balance wheel hairspring holder support stand that designed for watch repairing.2. Including large and small watch balance wheel holder base of the package to meet different repairing needs.3. One of the professional watch repairing tools, suitable for repairmen and amateurs to save expensive repair costs.4. Suitable for watch makers and watch repairing workers to use, practical and wonderful tool.5. The alloy material can effectively resist oxidation, not easy to rust, prolong the service life for durable use.Specification:Item Type: Watch Balance StandMaterial: Alloy Watch Balance Stand Diameter: Approx. 37mm / 1.46in Large Watch Balance Stand Base Diameter: Approx. 10mm / 0.39inSmall Watch Balance Stand Base Diameter: Approx. 7mm / 0.28inSuitable: for Watch repairing workers and amateur repairmanApplication: Watch repairing shop and home repairing Package List:1 x Watch Balance Stand1 x Large Watch Balance Stand Base 1 x Small Watch Balance Stand Base Note:1.Please allow 1‑2mm error due to manual measurement. Thanks for your understanding.