... metal zipper slider2.Specifications:Size:3.5YG ,4.5YG, 4YG, 5YG, Type:Single lock & Double lock Single weight:400-1050pcs,also can according ... standard :QB/T2171-95 6. Special requirements: Stamping Logo on puller and body Plating various colors Lead <90 ppm, non-magnetic ... . We have ten years of professional experience in production . Iron 4.5YG slider,Iron zipper puller