The Camera Screw Stopper from Manfrotto is a replacement part that attaches to select quick release plates. It prevents camera screws from accidentally falling out of the plate. It can be removed to take out or replace camera screws in the plate.
Replacement part for the following quick release plates: 357, 357PLV, 410PL, 454, 500A, 500AH, 501PL, 504PLONG, 509PLONG, 561B, and 577.
UPC: 719821249917