For sale is one (1) 1/2"-28 Die. Die is 1.5 inches in diameter (38mm). This die is spec'd for and used commonly for threading the barrel tips or cleaning existing barrel threads of various rifles to attach muzzle brakes, but can of course be used for many other applications. Also included is a die starter for .22 / .223 caliber rifles and 1/2"x28 TPI dies. The purpose of this tool is to squarely guide the die onto the barrel of the gun, eliminating the chance of crooked threading so you can attach muzzle brakes, flash hiders and other barrel mounted attachments requiring this pitch thread with ease. These TATs are approximately 1.5" long, the threaded portion is 1/2", the bore side is 1" long and is slightly under .22 (as it is not uncommon to see bores that vary in size).