GPI Thread Finish: 18-400Shell Material: PolypropyleneLiner Material: F217 PE FoamCap Color: Black Magnakoys 18-400 Continuous Thread Black Screw Closure Caps Fit the following products 4 Dram vials and 1/2 Ounce Boston Round bottles with the perfect closure. See our images to determine what size cap you need for your vials or bottles. Thank you for looking !!!!
