The S-60 and S-65 Trax telescopic booms feature a permanently fixed four-point track system that works in conjunction with the active oscillation axle system and positive traction drive system to ensure maximum rideability and traction in rough terrain. A ground contact pressure of 9.2 and 9.7 psi ensures minimal impression on sensitive surfaces. With steering like a wheeled unit, plus an 11-ft. inside turning radius and 21-ft. outside turning radius, the units can easily maneuver near obstructions and on and off trailers. The S-60 has a 500-lb. lift capacity at the maximum horizontal outreach of 50 ft.10 in. up to a working height of 66 ft. 2 in. The S-65 has a 500-lb lift capacity at the maximum horizontal outreach of 56 ft. 2 in. to a working height of 71 ft. 2 in.