The Trylon 4.98.0200.020 welded bottom step-bolt ladder kit is designed for use at the base of a SuperTITAN tower on sections 13 through 21. It extends the step bolts to the base of the tower to make it easier to climb. The 23 1/6" long ladder includes everthing you'll need to install the kit. The Trylon climbing step-bolt kits facilitate an easier climb up the tower and are available for all SuperTITAN tower heights and models. The 10 in step bolts are mounted to a central pipe and the pipe is then leg-mounted to the tower. The Trylon welded base step-peg ladder is an alternative to traditional apex climbing ladders and features a smaller projected area and lower cost. For maximum safety, the step-bolts can be used in conjunction with the Cougar safety cable system. All parts of the 4.98.0200.020 are completely hot-dip galvanized for years of trouble-free service.