The Browning 20 Ga T-Wrench allows more torque to be applied with greater leverage. Ideal for choke tubes that have experienced heavy shooting and might be a little sticky. The T-handle can be shifted to the side for greater leverage to break loose a sticky tube. Be extra careful when working with choke tube wrenches to prevent damaging the slot end of the tube, particularly with extended tubes. Keep choke tubes and threads clean to assure easy removal and insertion. Perhaps the most proven and effective choke tube wrench design ever, this wrench has been proven with sub-gauges, including any Browning 20 gauge choke system. It fits Browning Standard Invector, Invector-DS and Invector Plus choke tubes in 20 gauge.