Model: MARK4 V2 9inch
Wheelbase: 387mm
Weight: about 220g
Thickness of bottom plate: 3mm
Thickness of top plate: 2mm
Thickness of camera arm: 6mm
Camera side panel thickness: 2.5mm
Camera mounting hole spacing: 19 mm
Mapping mounting hole spacing 20*20mm & 30.5*30.5mm
Flight Control Mounting Pitch: 30.5*30.5mm
Inner space height: 35mm
Motor mounting hole pitch: 16*16mm & 19*19mm 

Model: MARK4 V2 10inch
Wheelbase: 427mm
Weight: about 227g
Thickness of bottom plate: 3mm
Thickness of top plate: 2mm
Thickness of camera arm: 6mm
Camera side panel thickness: 2.5mm
Camera mounting hole spacing: 19 mm
Mapping mounting hole spacing 20*20mm & 30.5*30.5mm
Flight Control Mounting Pitch: 30.5*30.5mm
Inner space height: 35mm
Motor mounting hole pitch: 16*16mm & 19*19mm