Haltec’s ES-301 Easy Lock 12 inch extended reach 180-degree reverse angle open air chuck with custom slide release coupler lock makes tire inflation a snap on hard-to-reach tire positions. The ES-301 has a custom coupler lock on with slide release for an easy on off application. This chuck is produced with hardened steel pins for increased service life and provides an extended reach for dual wheels. Haltec is a leading manufacturer of inflation systems and maintains its leadership position as a major manufacturer of specialized tire valve systems.