The moisture meter can quickly measure the moisture content of the grain. 1. There are 18 different sizes of watch pins, each size contains 20 pieces, which can meet different needs 2. Stainless steel hand spring has double arms and can be used for metal belt links 3. These strap needles are stored in a clear storage box to separate 18 different sizes of bracelet needles for easy use and storage 4. High-quality stainless steel material can ensure the durability and stability of the pins 5. Professional design and reasonable structure, good watch repair accessories . WATCH REPAIR TOOL KIT Specification: Item Type: Watch Pin Material: Stainless Steel Purpose: watch repair parts Including sizes (each length has 20 pieces): About. 6 mm / 0.24 inch 7 mm / 0.28 inch 8 mm / 0.31 inch 9 mm / 0.35 inch 10 mm / 0.39 inch 11 mm / 0.43 inch 12 mm / 0.47 inch 13 mm / 0.51 inch 14 mm / 0.55 inch 15 mm / 0.59 inch 16 mm / 0.63 inch 17 mm / 0.67 inch 18 mm / 0.71 inch 19 mm / 0.75 inch 20 mm / 0.79 inch 21 mm / 0.83 inch 22 mm / 0.87 inch 23 mm / 0.91 inch List of packages: 360 x Watch Pin 1 x Storage . WATCH REPAIR TOOL KIT Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.