Tire pressure monitoring sensors typically are held to the wheel with a mounting ferrule nut that is threaded to the outside of a specially designed valve stem, and are susceptible to damage or breakage during tire mounting or demounting. Without the TPMS Sentry™, the sensor is released and dropped into the tire cavity and damage can be caused by inadvertent contact with the tire changing equipment, by the bead of the tire when it is broken free of the wheel, or when the bead is forced over the rim of the wheel.

• Protects valuable valve stem sensors that mount through the valve hole
• T-shaped tool attaches to sensor to keep it from dropping in to tire cavity when mounting or demounting tire
• Made of hardened steel
• Knurled surfaces provide positive grip even when coated with water or bead lubricant
• Fits through all valve stem holes
• Lightweight and compact design - easy to carry and use anywhere
• Threaded valve core depressor tool to deflate tires
• Valve core removal and replacement