Item descriptions: Material: zinc alloy, Model: 3# 5# 8# 10#, Suitable: nylon zipper, Type: non-lock head, Quantity: 10 pieces/lot. Tips: Measure the zipper tooth width to determine the model. Zip Tooth width 0.4cm(#3 zip); Zip Tooth width 0.6cm(#5 zip & #7 zip); Zip Tooth width 0.7cm(#8 zip); Zip Tooth width 1.0cm(#10 zip);