5# metal Y teeth open-end metal zipper 1)highly quality,low price 2)can pass strength tests ... nickel,plated gold,plated nickel.Sliders shapeauto-lock,semi-lock,Europe,train,non-lock slider,pin-lock slider, etc .Zippers shapeclose-end,open-end ... ,two-way,loop open-end,X-type,O-type,long chain.Zipper ...