Roof-Hooks-with-Wheels-1-pair-Zarges-40970-p-This-pair-of-aluminium-roof-hooks-supplied-by-Zarges-with-wheels-have-universal-retro-fit-hooks-that-make-them-quick-and-easy-to-fit-Simply-attach-to-any-extension-ladder-p-p-The-wheels-help-to-move-the-ladder-into-position-then-simply-flip-the-ladder-over-to-hook-over-Supplied-with-easy-to-follow-instructions-and-complete-with-fixing-kit-p-Zarges-40970-Roof-Hooks-with-Wheels-1-pair-