Cementex 3/8 in Square Drive Extension Bar, 6 in - IB38-6Cementex 3 8 in Square Drive Extension Bar, 6 in IB38 6 An extension bar, also known as an extension wand or extension rod, is a tool commonly used in mechanical work, particularly in automotive repair and maintenance. It's designed to extend the reach of a socket wrench or ratchet, allowing the user to access bolts and fasteners in tight or hard to reach spaces. Specifications: Country of Origin: United States of America