Manfrotto 030L 10x10cm plate
The Manfrotto 030L 10x10cm hex quick release plate clips into standard hex-type tripod heads, but it's got a much larger 10x10cm square plate surface to support heavier cameras (talking large format here). Also: little securing screws to make sure that your camera's not going to untwist. Standard 1/4" camera mounting thread. In good cosmetic condition, with some cosmetic wear; function is excellent.