The HP RB1-1411-000 pickup roller is a replacement paper-feed part for the HP LaserJet 4V. It is identified as the pickup roller for this printer, helping feed paper from its input tray during printing.
HP 4V/4MV maintenance instructions identify RB1-1411 as the multipurpose (MP) tray pickup roller. This makes it a relevant service part for the multipurpose paper input on those printer models. The distributor listing specifically names the HP LaserJet 4V as compatible and gives the exact part number RB1-1411-000.