Description:360 pieces watch band link cotter pins with box18 different sizes: 6mm,7mm,8 mm, 9mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm.Stainless steel watch pins with double flange, pins applied for metal watch strap links.Material: Stainless SteelDia: Approx. 0.9mmPackage Includes:360 Pieces Watch Band Link Cotter Pins (with Box)(20 Pack)Note:Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.