delrin zipper open-end, all kinds of zippers: nylon, metal, delrin, plastic, rhinestone, both finished zipper and long chain... Nylon: #3,#4, #5,#7 ... ,#8,#10, finished zipper and long ... repellentResin/Plastic: #3,#4,#5,#6,#8,#10, finished zipper and long chain dyed teeth, plating teeth (gold teeth, ...