... kg. 3.Semi-automatic lock or Double lock 4.spring lock 1. Facture:spring lock zipper slider ... metal zipper slider2.Specifications:Size:3.5YG ,4.5YG, 4YG, 5YG, Type:Single lock & Double ... .3. Material: H65 brass/H85,90 copper/Iron 4. Application: slider for metal zippers,Jeans, clothes, bags ... have ten years of professional experience in production . 4.5YG slider,No.3 slider,slider for No.3 ...