1/2-28 Thread Alignment Tool TAT/Die Starter for .223 Caliber Barrels Gunsmithing - TyCa Industries Sized to fit .22 and .223 caliber barrels Hex socket cap allows using an allen wrench to prevent the TAT from rotating while threading Stainless steel 1.75" shaft guarantees more precision Manufactured exclusively by TyCa Industries Lincolnton, NC