Details
Watch winding stem extender assortment kit in the most common sizes, made of stainless steel. 65 pcs in total, 5 pieces per tap sizes. Comes in labeled assortment box. Tap size conversion format is internal / external. Tap sizes included in assortment: Ø0.70 - Ø0.70mm (Tap 7 to 7), Ø0.70 - Ø0.80mm (Tap 7 to 8), Ø0.70 - Ø0.90mm (Tap 7 to 9), Ø0.80 - Ø0.70mm (Tap 8 to 7), Ø0.80 - Ø0.80mm etc. These watch stem extenders are used if the winding stem has been discontinued, cut too short, or broken off inside the movement. If you still have your original winding stem but it is broken and too short to use with your crown, you can use a stem extender from this assortment, to lengthen the original broken watch stem to extend to the correct length that you need for your repair. You can also use an stem extender that will change the tap (thread) size from a larger or smaller size to a standard tap (thread) size. If you want to install or repair watch movements, then such stem extensions are part of the basic equipment of every watchmaker.