Product description Size:8.5mm/0.31 inch, 10mm/0.39 inch and 12mm/0.47 inch Fuman Forest Thank you for your choice Rust proof brass made, sturdy and not easy to get erosion and rust, with smooth surface, convenient for you to use in the daily life   The studs and sockets of the same diameter are matchable, they can be easily buckle together or separate, effective fasteners for any sewing project.   Useful and convenient:   You can use different buttons and sizes to match different clothes, and the replacement can be natural Quality assurance:   Each group of buttons has been through the combination of assembly test, can be used with confidence Note: Small items, please keep away from children. Specifications： Material: brass   Diameter: 8mm  10mm and 12mm Color: black and silvery   Quantity: 50/black 50/silvery