19mm snap-fastener & button with six holes: *material:brass *size:8.5mm,12mm,15mm,17mm,19mm,21mm *color:nickel&nickel-free, 19mm snap-fastener & button with six holes:*material:brass*size:8.5mm,12mm,15mm,17mm,19mm,21mm*color:nickel&nickel-free,black nickel,anti-brass,honed*quality:strong tension,not get rusty,not easy to be scrapped,anti-aging and ante-rust(By quality and reasonable price)*Eco- ...