Lens Hood 2pc, 163mm (6.42in) long. Replaces Canon ET-155 hood. (MK I, RF)

Bayonet-mount 2pc lens hood kit. Replaces Canon ET-155 hood. Length: 163mm (6.42in). Maximum diameter: 190.5mm (7.5in). Extension beyond end of lens: 139mm (5.48in). Approximate weight: 359g (12.7oz). Fits Canon EF 400mm f/2.8L IS USM, RF 400mm f/2.8L IS USM, EF 800mm f/5.6L IS USM. Sections are 89.5mm (3.52in) long. Handling a two-piece hood: https://youtu.be/laydgwmaQG4