They are made for a 36mm Rolex Date, Datejust 16013, 16014, 16018, 16019 16030, 16030, 16200, 16203, 16233 ,16234, 16250, 16253, 16613 Jubilee watch band with 20mm lugs for and others. They will work on Date ,Datejust, Two Tone, Gmt I, II, Explorer or any other watch with 20mm end.
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