Tyre Valve Inflator Connector Twin hold on connector for standard bore tyre valves. Access both inner and outer valves of twin wheel assemblies on commercial vehicles. Open connection for use with tyre inflation gauges. A Closed End connector is used when air is supplied directly from a main air line (i.e. compressor or air receiver). A non-return valve unseats on connection to the tyre's valve, allowing air to flow into the tyre. The handles on these connectors are red in colour. An Open End connector is used with MK3 Tyre Inflator, PCL wall gauges and PCL portable gauges. This connector has a pin which unseats the tyre's valve when in use. The handles on these connectors are black in colour. Specifications: Genuine PCL: CO1B03 Red rubber handle Air Inlet: 1/4" BSP female thread Overall length: 235mm