The little giant work platform fits on any rung of the little giant ladders series classic pro glass fibre and is designed to support up to 150kg the unique design makes it easy to tuck away when not needed yet easily move into place using your foot when neededstanding on a ladder for longer than 2 minutes can be tiring use this and youll want to stand on the ladder all day it will make it easier to paint walls and probably safer too since you wont get so tired material aluminium