KAK Industrys Plan B muzzle wrench and multi-tool. Compatible with A2 (and similar) muzzle devices, Plan B devices, Hub mounts, and most bravo mounts. Please note some suppressor manufacturers will not honor warranty claims if other brands are used with their suppressors.Features :"1/2" Drive cutout for torque wrench or breaker bar,Hook Spanner fits most bravo mount suppressors"3/4" Wrench flats for muzzle devices (A2)""13/16" Wrench flats for muzzle devices (Plan B devices)""1" Wrench flats for Hub mounts (Bravo mounted suppressor adapters),