Colonial Elite Series Turkey tubes are designed for the serious Turkey Hunter. These tubes extend beyond the muzzle 1 1/2" are knurled and ported and have an extremely tight constriction. These tubes provide outstanding shot patterns as well as a significant recoil reduction. Designed for single barrel shotguns only. Warning: Due to the extremely tight constrictions of all Turkey Tubes, they are not to be used with steel shot!! Made in the USA...