The Dillon Rifle Company HUB compatible Direct Thread Adapter allows you to directly mount your Dillon Rifle Company suppressor to your weapon system. It is made of high strength steel and is finished in black nitride. The Direct Thread Adapter has wrench flats for either the supplied wrench or any 15/16in wrench. It is offered in ½-28 common for most AR-15 type rifles, 5/8-24 common for most AR-10 type Rifles and ¾-24. Follow the mounting guide in your suppressor manual to ensure proper alignment and secure fitment.