MTM Choke Tube Cases are made of rugged polypropylene with internal dividers and a foam pad. The foam pad helps prevent rattle and protect threads. Depending on your chokes, there is room for most factory wrenches and choke lube. Cases are designed to hold 20, 12 and 10 gauge chokes. FlipTop Lid with Snap-Loc latch. Max tube length = 4.05".