The Browning 12 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. Fits Standard Invector, Invector-Plus and Invector-DS choke tubes. Perhaps the most effective choke tube wrench design, ever. The design is proven in every gauge over the years, but it all started with this design in 12 gauge. This one wrench will take care of all your 12 gauge choke tube needs, no matter what Browning system your shotgun has.