The VSR is designed to attach to the rail fastening, and by means of a rotating lift arm and bearing, contact the underside of the rail head and lift the rail from the sleeper (tie).
Once lifted, the rail can be moved with very low friction for the purposes of rail stressing, the resultant excellent stress distribution is therefore optimised.
The VSR can also be used for changing rail pads and the e-clip product has been designed with extra lift for that specific purpose.