... zipper. Good performance in teeth strength. Ideal for shoes fastering. Shoe Zipper1.Material: Alumium, Copper, Brass ... etc.2.Size Availiable: 3#, 4#, 5#, 8#, 10#3.Teeth Style Available: Y Teeth, ... Black Nickel, Crystal Pearl, Black Pearl, Coffee Gold......5.Hundresds of slider could be selected.6. Tape color ... available.8. Certificate of Quality: SGS, INTERTEX 5# Shoes Zipper Gun Metal