Nickel Free Zipper Accessories 1) Top China Zipper brand 2) 20 years zipper experience 3) Good price 4) OEKO certification High quality 3F zipper sliders 1. Nylon, plastic and metal zipper sliders2. #3,#4,#5,#7,#8,#10,#20,#30 available3. Various designs and finishing 4. Autolock, nonlock, pinlock, reversible available.5. NICKEL FREE, AZO FREE.