MOCAP Tapered Polyethylene Plastic Plug Caps are inexpensive dual function closures which can be used as either a plug or a cap. These tapered polyethylene plug caps are made from tough but flexible polyethylene to form a secure fit, yet easily removed. Outside Length: 0.97in / Flange Diameter: 10.56in / Small Inner Diameter: 9.82in / Small Outside Diameter: 9.97in / Large Inner Diameter: 10.08in / Large Outside Diameter: 10.22in