30mm NBR Watch Silicon Balance Wheel Mainspring Mount Holder for L888 MovementFeature Watch balance wheel mainspring mount holder Material: NBR(Nitrite Butadiene Rubber) Holder diameter is around 30mm Color: green Waterproof and dustproof Weight: around 15. 8g Manual measurement may have a 1 3mm error China made watch repair tool We only sell brand new products. Package included: 1X holder the balance wheel in the picture is not included and just for the display.

SKU Model : 3135-510R

Red+Blue 39

There are 10 sizes

Type : Setting lever spring

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