The Mishimoto Mini Tire Gauge is a handy accessory to store in your glove box or latch on to a set of keys. It's best to always be sure of your tire pressure, and this little tool will help you with that reassurance any time worry sets in or if you're second guessing the last time you filled your tires. The Mishimoto Mini Tire Gauge is small enough to fit in your pocket and reads up to 50 psi. The body is made of durable aluminum and etched into the side is the Mishimoto logo. Attached to the head piece is a strong clip, making this the perfect keychain to tag along while you travel.