An apparatus for transporting articles between working locations, comprising: at least one container having an interior space in which articles to be transported can be stored; one or more rotatable ground engaging wheels mounted toward the bottom of the apparatus for rotation about an axis to provide rolling support for the apparatus; an adjustable pulling handle slideable between a retracted position and an extended position, the pulling handle and the one or more ground engaging wheels being arranged to enable a user to manually pull the pulling handle generally rearwardly so as to tilt the apparatus rearwardly to a tilted rolling movement position, thereby enabling the user to roll the apparatus to a desired location by pushing or pulling the pulling handle in a desired direction, characterized in that the apparatus further comprises: a rocker lock constructed and arranged to be moveable between 1) a locked position wherein the pulling handle is locked at a selected position such that sliding movement of the pulling handle between the retracted position and the extended position is prevented and 2) an unlocked position wherein sliding movement of pulling handle between the retracted position and the extended position is permitted, wherein the rocker lock has an actuation portion and an engagement portion, the rocker lock having a pivot axis provided between the actuation portion and the engagement portion, and a biasing member that biases the rocker lock towards the locked position, and wherein the actuation portion of the rocker lock is actuatable against the bias of the biasing member to pivot the engagement portion of the rocker lock to the unlocked position, and wherein the engagement portion is constructed and arranged to lock the pulling handle when the rocker lock is in the locked position. at least one container having an interior space in which articles to be transported can be stored; one or more rotatable ground engaging wheels mounted toward the bottom of the apparatus for rotation about an axis to provide rolling support for the apparatus; an adjustable pulling handle slideable between a retracted position and an extended position, the pulling handle and the one or more ground engaging wheels being arranged to enable a user to manually pull the pulling handle generally rearwardly so as to tilt the apparatus rearwardly to a tilted rolling movement position, thereby enabling the user to roll the apparatus to a desired location by pushing or pulling the pulling handle in a desired direction, a rocker lock constructed and arranged to be moveable between 1) a locked position wherein the pulling handle is locked at a selected position such that sliding movement of the pulling handle between the retracted position and the extended position is prevented and 2) an unlocked position wherein sliding movement of pulling handle between the retracted position and the extended position is permitted, wherein the rocker lock has an actuation portion and an engagement portion, the rocker lock having a pivot axis provided between the actuation portion and the engagement portion, and a biasing member that biases the rocker lock towards the locked position, and wherein the actuation portion of the rocker lock is actuatable against the bias of the biasing member to pivot the engagement portion of the rocker lock to the unlocked position, and wherein the engagement portion is constructed and arranged to lock the pulling handle when the rocker lock is in the locked position.