Lens Hood 2pc, 150mm (5.91in) long. Replaces Canon ET-138 hood.

Bayonet-mount 2pc lens hood kit. Replaces Canon ET-138 hood. Length: 150mm (5.91in). Maximum diameter: 172.5mm (6.79in). Extension beyond end of lens: 124.5mm (4.91in). Approximate weight: 305g (10.8oz). Fits Canon EF 500mm f/4L IS USM. Sections are 83mm (3.27in) long. Handling a two-piece hood: https://youtu.be/laydgwmaQG4