Metal CT Caps are offered in Metal Overshell, unishell and Continuous Thread finishes. Lug Caps with a button or without a button plus Plastisol Liner. Other liners include: PE Foam, F217, PS, and induction seal Liners. Aluminum caps are also offered with the same liner. Sizes include: 24mm, 28mm, 33mm, 38mm, 45mm, 53mm, 58mm, 63mm, 70mm, 89mm.