Brownells U.S. Screw Checker Steel Gunsmithing Tool

The Brownells U.S. Screw Checker is a precision steel gunsmithing tool designed to identify and verify screw thread specifications. This essential tool helps gunsmiths and firearms enthusiasts accurately determine thread pitch and size for proper screw selection during maintenance and repair work. Made from durable steel construction for long-lasting performance in professional and hobbyist gunsmithing applications.