Here are some spring bar in size of 18mm and 19mm.
These stainless steel spring bar are slightly thicker and stronger body than the generic ones.
They are commonly use in Swiss, Seiko (used in King Seiko, Grand Seiko), Citizen dress watches.
They are available in 2 sizes, 18mm and 19mm.
Pin head on both ends is 0.75mm.
Body is 1.75mm.
Each pack consist of 10 pieces.
Price : S$12 for 10 pcs (inclusive of shipping)
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OK enough of writing, here is the product :