PROFESSIONAL WATCH PREE SET – The watch tool is made of steel and the 12 assorted dies are made of ABS plastic material that not scratch or mar crystals. Watch dies: Size: 12 sizes that fit for 18mm to 50mm watch (50/48 mm 46/44 mm 42/40 mm 38/36 mm 34/33 mm 32/31 mm 30/28 mm 26/24 mm 23/21 mm 20/18 mm).
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