A runner for slidably supporting a drawer includes a telescopic rail assembly having a first rail and a second rail, both being movable one along another to allow the telescopic rail assembly to be varied between an elongated position and a shortened position. The runner further includes a retainer having a female piece attached to the first rail and a male piece attached to the second rail. Additionally, the female piece has a recess defined therein and the male piece is adapted to releasably snap into the recess of the female piece when the telescopic rail assembly is in the shortened position.