The TiltNRoll® features a special balanced design that allows it to tilt easy to the rolling position when pulled towards the user. The user is not required to extenda foot to assist in tilting the ladder to the rolling position. Once tilted, the ladder can be easily moved from job to job on the two 4" diameter wheels. TiltNRoll ladders are one-piece welded shipped directly from the mfg ready to use. These ladders are supplied with handrails that extend 30" above the top step. Made from stainless steel construction, but steel and aluminum are also available. Rests on four 2-1/2" rubber pads. 7" deep stairs with a 10" deep top step (standard) 20" top step available. Gray powder coat finish. 450lb. load capacity. TiltNRoll ladders meet applicable OSHA and ANSI standards, Cal-OSHA models also available. 24" wide stair treads with grip strut stair treads.