Invector Plus 12 Gauge Sporting Clays Browning Inv. Choke Tubes - Invector Plus 12 Ga Improved Cylinder Browning Choke Tube Ss

Longer parallel section than Carlson's conventional tubes gives consistent shot patterns. Extra smooth interior surface minimizes shot deformation. Laser marked constriction provides fast identification. External knurled ring extends approximately 3/4" from end of barrel for fast changes between stations. Can be used with steel shot. Mfg: Carlsons SPECS: 1704 stainless steel. Constriction (SIZE). Threads are as follows - Browning Invector-Plus - 12 ga., .820"-32.