Omega Speedmaster crown winder

I have problems with dry and cracking skin especially during winter so designed this simple winder to save my bleeding fingers. Designed for Omega speedmaster 3861 (24 teeth crown). Presumably should work for other models as well, not sure about model year crown sizings. Fit is quite snug, might need bit of a pressing with first operation. Be carefull to not over wind the crown due to added leverage!