A water-fed pole for window cleaning including: an extendable pole having two or more pole sections, the pole sections being moveable relative to each other, in use, to extend and shorten the pole; and one or more clamps, each clamp being coupled to a given pole section and being operable to clamp the given pole section to an adjacent pole section, thereby fixing, in use, the length of the pole. Each clamp including a clamping surface arranged such that, on operation of the clamp, the clamping surface is brought into contact with a surface of the adjacent pole section to clamp the given pole section to the adjacent pole section. The at least a portion of the clamping surface made up of a resilient material.