The Ascot Truck Lock-On Extension Chuck has an extra-long length of 22" for extended reach on dual wheels. The extension chuck features a convenient on/off application, as well as an automatic locking design for ease of use. For increased service life, the extension chuck is equipped with heavy duty steel pins. For non-slip usage and solid grip, the handle features a convenient grip design. The tool helps improve seal on flow through both caps, the company says.