Why Add the Thor's Lightning Short Stem - APEX RPV Compatible Lock-On Air Chuck - Closed? The Thor's Lightning Short Stem/Apex RPV Compatible Lock-On Air Chuck is a great fit for wheel/tire combinations with short valve stem (some older factory Toyota wheel/tire setups, for example), or for customers who have taken the plunge and upgraded to the Apex Rapid Precision Valve (RPV). These chucks are crafted from brass and have a handle-actuated locking mechanism that make them easy to use.

• Available in quantities of 1, 4, and 5.
• Compatible with standard 3/8" brass air fittings- screws on
• Collar is 5/8"
• Rubber insert in collar ensures tight fit when combined with teflon tape/sealant
• Includes a 3-year warranty against manufacturing defects.