Steel Shot Tubes; Slim Profile Fits Doubles & Over/Unders
Reduced diameter, extended, knurled ring, gives the necessary clearance to let you use two choke tubes in side-by-side and over/under guns. Extended tube places the choke restriction outside the barrel. Prevents steel shot battering from jamming tube into the barrel. Not for use with "F" or "T" size shot. Knurled ring for easy removal without a wrench.
Big Book Catalog, Issue:70, Page:194
SPECS: Steel, blue finish. 2-3/8" (6cm) long. Tru-Tube fits EAA Bikall and other guns. 12 gauge .795"-44 tpi, 20 gauge .675"-44 tpi.