inBox 30 Sets 12.5/15/17mm Gunmetal Black Snap Fasteners Poppers Sewing Buttons Press Studs Kit For Leather Craft Jackets Canava Clothing Bags Repair w/ Die Punch Tool Sets Kit (12.5mm 1 Box) Widely used for leather craft, handbags, clothing, leather straps, jackets, Jeans etc. Material: Brass (non-rust); Size: 12.5/1517mm (the front part);Supplied by sets (each set includs 4 parts: Front, Female, Male and Back) All storage in the box , Convenient to use ; Color: Gunmetal Black ( Not True Black, more gray black)