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. Clear smoke color. Capacity Notes6 Capacity version holds 6 flush mount chokes or 3 extended.9 Capacity version holds 9 flush mount chokes or 3 long extended.