1.SIZE:#3 #5 #8 2.PRODUCTS:NYLON,METAL,INVISIBLE,PLASTIC... 3.PACKING:5000PCS/CTN,10000PCS/CTN,20000PCS/CTN. SPEC:720pcs/KG,690pcs/KG,510pcs/KG,500pcs/KG,1.3KG/1000PCS... 3YG,4YG,4.5YG,5YG,6YG...PRODUCTS:NYLON,METAL,INVISIBLE,PLASTIC...PACKING:5000PCS/CTN,10000PCS/CTN,20000PCS/CTN... #5 Auto-lock slider with plastic puller for nylon zippers