The Astro Pneumatic 3081 - Dial Gauge Tire Inflator's construction features an aluminum die-casted unit covered with a rubber sleeve for extra comfort and durability. The dial gauge feature is clear and easy to read. The unit has a 3-in-1 function that inflates, deflates and measures tire pressure. Also features a two position measurement with inflate/deflate level. Increased safety and reduced tire-related incidents. 80mm pressure gauge (0-12 Bar/174Psi). The unit includes a 21" hose.