* No Electrical Source Necessary* Easy-to-Use Tyre Drying & Purging System* Vacuum & Fill Four Tyres Simultaneously in Minutes* Vacuum Gauge Included* Compact, Easily Transported System* Transport on Supplied Cart or Mount in Trailer* Uses Compressed Air or Nitrogen* Controls Stagger Growth* Reduces Tyre Wear & Limits Pressure Gain* Eliminates Tyre Glazing* Patent # 7,137,417** (Tyre Chucks Included)