Allen Competitor 12 Gauge Choke Tube Case Black Polypropylene w/Foam Lining. The foam lining and special dividers are designed to hold 5 standard choke tubes 3.25 inche or less or 3 extended choke tubes up to 5 inches long. Designed to firmly hold 12 Gauge Choke tubes. Also works with 16 20 and 28 gauge and .410 bore choke tubes. Clear Lid. Latch opens with one finger but offers a secure closure. 5.5 inches x 4 inches x 1.25 inches. Specifications for Allen Competitor 12 Gauge Choke Tube Case: Manufacturer: Allen Fabric/Material: Polypropylene Color: Black Dimensions: 5.50 x 4 x 1.25 in Package Contents: Allen Competitor 12 Gauge Choke Tube Case Allen 8337: Competitor 12 Gauge Choke Tube Case Black Polypropylene w/Foam Lining