Manfrotto 501PL Spare Plate for MN501 and MN 503

Be warned this is the inferior plate Manfrotto are now producing - if you look closely at the stock image in the advert it has a "gold pin" which acts as the restrainer to prevent the camera from rotating. Manfrotto in their idiocy (and probably as a cost saver) have replaced that spring loaded metal brass pin with a completely inadequate plastic "pop in pin". This is unacceptable and I found it utterly unfit for professional use.