Precise Fit: The clock winding key precisely matches the square shaft specification of the mainspringhole, ensuring a tight fit after insertion,prevents slippage and free-spinning during winding, perfectly matching the winding requirements of classic Sanwu brand wall clocks, grandfather clocks, and table clocks, solving the pain point of finding spare parts for older Sanwu clocks
Ergonomic design for easy operation: The clock keys feature a non-slip handle with ample friction for a secure grip, preventing slippage during winding. Their compact size allows for easy placement in a drawer next to the clock or placement directly on top, making them convenient to use. The insertion depth and engagement angle are optimized to prevent damage to the mainspringmechanism due to improper operation
Steel material: Constructed from steel, the clock winding key measures approximately 5.2cm/2.05in (length); 4.8cm/1.89in (height); 0.8cm/0.315in (outer diameter); and 4×4mm/0.157×0.157in (inner diameter). Finely polished for a robust structure,will not deform or break even after repeated winding, preventing problems caused by key damage hindering mainspringwinding
Suitable for collecting and creative: Vintage watch collectors can use retro mechanical wind clock parts... The set complements and completes the collection; craft enthusiasts can also repurpose surplus keys into vintage pendants, jewelry accessories, or use them for steampunk-style handcrafted creations, expanding their applications and giving these small accessories more value
Function and Use: Clock keys for winding. Clock keys help watchmakers and repairmen more efficiently inspect clock problems. Compact and convenient, easy to store and carry, and easy to transport. The key handle is logically positioned for comfortable gripping and operation. Suitable for most vintage mechanical clocks and wall clocks,practical and essential clockmaking tool