This Locking Screw from Manfrotto is used to lock a center column on a tripod or a section of a light stand into place. The Locking Screw can be used as a spare or as a replacement part.
Compatibility
00BAC, 004b, 004BAC, 005B, 055MF3, 055PRO/B, 190MF3, 190MF4, 190PRO, 299B, 458B, 420B, 755B, 755MF3, 756B, 756MF3, NGET1, NGET2, 004, 004Y, 004-14, 004LLG, and 005X