... cooper zipper,spring lock slider1)No.3,4,5,7,8,10 and so on zippers/chain and sliders are ... zippers also used on shoes,bags,fashion garments and others.5)1.The zipper is smooth to ... run forward and back ward,and withstands repeated pulling,and has good clor fastness to ... washing,etcHigh quality,reasonable price,best service and quick delivery.Any concerns,please contact us freely. ...