... also can make in 610pcs or 560pcs/kg. 3.Semi-automatic lock or Double lock 4.spring lock ... Facture:spring lock zipper slider metal zipper slider2.Specifications:Size:3.5YG ,4.5YG, 4YG, 5YG, Type:Single lock ... client's different requests.3. Material: H65 brass/H85,90 copper/Iron 4. Application: slider for metal zippers,Jeans, ... experience in production . 4.5YG slider,No.3 slider,slider for No.3 zipper