GPI Thread Finish: 20-400Shell Material: PolypropyleneLiner Material: F217 PE FoamCap Color: Black Magnakoys 20-400 Continuous Thread Black Screw Closure Caps Fit to Cap your 1 and 2 Ounce Boston Round bottles with the perfect closure. See our images to determine what size cap you need for you vials or bottles. Thank you for looking !!!!
