5# metal Y teeth open-end metal zipper 1)highly quality,low price 2)can pass strength tests 3)washing tests performed by SGS Brand Name PJ ... Teeth Material H65/85 brass/nickel/purple brass /alunmium. Teeth ... lock slider, etc .Zippers shapeclose-end,open-end,two-way,loop open-end,X-type,O-type,long chain.Zipper size3#,4.5#,4#,5#,,8 ...