Smeal Manufacturing Co.’s 4T hydraulic derrick is designed for fast line-speed while maintaining 3-ton capacity. The 4T consists of a 35-foot-high telescoping mast with 10-feet maximum layback. Intended to be mounted on a truck 3⁄4-ton or larger, its weight is approximately 2,200 pounds. Standard features include direct-mounted PTO and pump, controls mounted on the left rear corner of the rig, rear outriggers with holding valves, ring-and-pinion drive on main winch, holding valve on mast cylinders and line parting block, with many optional features available. Smeal Manufacturing Co.