DRIFTECH LONGTOM, Longtom 2 boom Air Drill Rig. Serial # 350. Driftech 250 Air Drills. Self Propelled Air Powered Carrier Requires 550CFM@90psi for Tramming. Oiler. Operators Platform. Each Drill Requires 175cfm@90PSI. Air Must be Delivered Minimum 2" Air Line. Approximate Weight 5500 Lbs. Approximate Dimensions 17‘L x 53"W x 66"H.