12gauge Special Purpose Tru-Choke Choke Tubes - Tru-Choke 12 Ga. .675'''' X-Full

xternal "Special Purpose" Choke Tubes made from high tensile strength e.d.t. 150 carbon steel to withstand the higher pressures created by large shot and the constant pounding of competitive shooting without bulging at the threads or splitting the barrel. If a tube does fail, simply remove and replace with another. Turkey Tubes deliver extra tight patterns when used with heavier charges of large size lead shot. Not for use with steel shot! Mfg: Colonial Arms SPECS: Blued e.d.t. 150 carbon steel choke tubes, Hardened to Rc 32. Approx. 23/4" (6.98cm) long. Dimension shown in price line is nominal I.D. Tru-Choke(TM) (TC) 12 gauge .795"-44 tpi. 20 gauge .675"-44 tpi.