It is Compatible with these models: Manfrotto 501HDV / 503HDV / 701HDV / 577 / 519 / 561 / Q5 series 5D2 / 5D3 / 7D / SLR camera Quick Release

Net Weight: 0.25kg
Parameters: 1/4" and 3/8" screws
Bottom: 3/8" female thread: 1/4" female thread
Color: Black
Material: Aluminium
Plate: 501/503/701
Sliding travel of plate: 0.79" (20.06mm)
Quick Release: Yes
Backup: Secondary safety system
Gross Weight: 0.3kg