Q'Straint Q5-6410-T-BLK QRT Occupant Securement Shoulder Belt with L-Track Fitting, Black. L-Track Fitting attaches to an L-Track Anchorage on the vehicle wall. The Q’Straint Occupant Restraint Lap and Shoulder Belt are vital safety components to the QRT MAX, QRT Deluxe and QRT Standard and 4-Point Wheelchair Securement. The QRT Occupant Restraint system operates in conjunction with the Pin Connector located on the QRT Retractor. It is important for passenger that both the occupant restraint lap and shoulder belt are implemented to ensure passenger safety.