The Competitor Choke Tube Case is designed to be versatile and compact. The foam lining and special dividers are designed to hold 5 standard choke tubes 3.25 inch 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.