Where return idler sets comprise two rolls, a support frame is required which supports the idler pair and attaches the idlers to the conveyor frame. This 2-roll design forms the return belt into a 'v' trough and these return idler sets are referred to a 'V' return idlers. The trough angle of the 'V' return idler is usually 10 degrees and this feature has been developed to assist with belt training along the return strand.