Griffin Armament DT1375X24-5/8X24 Thread Adapter 5/8"X24 17-4 Stainless Steel Nitride Black The 1.375X24 Hub Direct Thread Adapter provides a Direct Thread Interface For The Griffin Bushwhacker, Omega, Nomad, & Other 1.375X24 Threaded suppressors. Wrench flats Make It equally Simple To Attach Or remove From The Suppressor Tube Body Or firearm's Muzzle Threads. No Proprietary tools required. Available In 1/2X28 And 5/8X24. It Is Important To Remember That Each Host Firearm Must Be Checked For Baffle Alignment Via Visual Inspection Before Firing. Finish: Nitride