Bayonet-mount 2pc lens hood kit. Replaces Canon ET-155 hood. Length: 135mm (5.31in). Maximum diameter: 190.5mm (7.5in). Extension beyond end of lens: 111mm (4.37in). Approximate weight: 319g (11.3oz). Fits Canon EF 400mm f/2.8L IS II USM, EF 400mm f/2.8L IS III USM. Sections are 75.5mm (2.97in) long. Handling a two-piece hood: https://youtu.be/laydgwmaQG4
