delrin zipper open-end, all kinds of zippers: nylon, metal, delrin, plastic, rhinestone, both finished zipper and long chain... Nylon: #3,#4, #5,#7,# ... pin-lock, auto-lock, semi-autolock, L-type and Invisible zipper , woven type, water repellentResin/Plastic: #3,#4,#5,#6,#8 ... ,#10, finished zipper and long chain dyed teeth, plating teeth (gold teeth, silver ...