The Zarges Skymaster Trade Ladders are extremely rigid with strong connection between rungs and stiles. The top and middle sections have a rung hook and positive operation locking tab. A rigid aluminium-locking bar prevents collapsing during use. Strong, nylon restraint straps with a sewn-in fixing tab keep the ladder stable and prevent splaying. Quality stile guides encompass the whole stile, with plastic inserts for smooth handling. The Skymaster ladders have high-strength ZARGES quality flanged connections between rung and stile. The replaceable 2-component plastic end caps ensure positioning without risk of slipping and at the same time provide firm seating in the stile. The rungs and stiles are extruded aluminium sections, which provide excellent strength. These ladders are in effect 6 ladders in one. You can use them freestanding, as a trestle step, single, double or triple extension ladder or even a stairway ladder. Standard: EN 131, 150 kilo rating.