... usage PRODUCTS DETAILS1.Finished zippers with open end , closed end , two ways open end or closed end ; 2.#3 #4 #5 ... , 3.Auto lock,non lock and semi-auto lock sliders for choice; 4.Spary or elcetroplated technics ,and we can also ... #3#4#5#7#8#10NYLON √ √ √ PLASTIC √ √ √ √ METAL√ √ √ √ √ GOOD PRODUCTS Two-way open end plastic zipper