This lightweight, portable, motorized cathead is 4-cycle gasoline motor driven. It includes a built-in centrifugal clutch that permits the cathead to stop when the engine is at idle. The cathead is driven by a sprocket and chain drive enclosed by safety guards. Engine RPM is 3,600. Cathead is 4-1/2" O.D. and turns at 175 to 225 RPM. Lifting capacity is rated at 500 lbs. It is ideal for use with a 140 lb. drive weight or soil sample kit. The aluminum derrick is designed to accommodate lifting tools in 10 ft. sections. The derrick legs are 16 ft. long, consisting of two 8 ft. lengths to facilitate transportation into remote areas or marine type conditions.