30 Completed Sets 12.5mm Silver & Antique Brass Snap Fasteners Poppers Sewing Clothing Jacket Jean Bag Shoes Buttons Studs Kit with Fixing Tool 30 Completed Sets Snap Fasteners 15 sets silver and 15 sets antique brass with the fixing tool; you need to use the hammer to work with the tool; Supplied by sets (each set includs 4 parts: Front, Female, Male and Back) Material: Brass (non-rust); Widely used for leather craft, handbags, clothing, leather straps, jackets, Jeans etc. 12.5mm: cap diameter 12.5mm, socket 12mm, stud 10mm ,Post diameter 10mm