Features: These button fasteners are made of eco-friendly brass, rust resistant. Setting tools are made of electroplated iron, high hardness and comfortable grip. Thickened button fasteners are washable, harmless and sturdy. Buttons are well packed in a plastic box for convenient carry and storage.Fine workmanship, conveniently and easily used at home or in clothing shop.Specifications: Type: 63312MM, 65510MM (Optional)Button Surface Diameter: 12mm(633), 10mm(655)Material: Brass, electroplated iron Button Color: Bronze, silver, gold, black (10sets per color) Box Size: 17.3*9.8*2cm/6.8*3.8*0.8inWeight: 186g, 175g(approx.) Package Includes: 40 sets x Buttons 1 set x Setting Tools 1 x Hole Punch