Nylon zipper 1.type:3# Nylon zipper 2.style:Two-Way Open-End Nylon zipper with plastic bottom stop 3.slider:Auto-Lock slider ... zipper.2. model: 3#, other models also available such as 3#,4#,7#,8#,10#.3. zipper style:Two-way Open-End Nylon zipper ... : 100 pieces /transparent polybag, outer with carton box to packing. 3# Two-Way Open-End Nylon zipper with plastic bottom stop