Tire Pressure Monitoring Sensor Valve Stem – Straight with TPMS Mounting Loop. This TPMS adapter is typically designed for use on one piece wheels (excluding reverse wheels) with straight standard diameter valve stems. Valve stem must be located in the tire drop in zone of the rim. TPMS must have an adjustable angle valve stem. One 11mm diameter rubber grommets included. Loop hole diameter is ~11mm. Overall Length with TPMS Loop is ~50mm. Tire pressure sensors not included. Tire pressure sensors sold separately, please call for more information.