Bluemoona 200 Pcs - #8 Brass Zipper Stoper Top Stops Bottom Rescue Repair Set (Gun Black) Size:#8 Color:Nickle, Gun Black, Bronze, Gold Gold:inner diameter:4.6mm,outer diameter:6.6mm,Height:4mm,Thick:1mm, Other:inner diameter:3.4mm,outer diameter:6mm,Height:4.5mm,Thick:1.3mm Material: Brass