Lens Hood 1pc, 183mm (7.2in) long. Matches Canon ET-123B II hood dimensions.

Bayonet-mount 1pc lens hood kit. Matches Canon ET-123B II hood dimensions. Length: 183mm (7.2in). Maximum diameter: 145.5mm (5.73in). Extension beyond end of lens: 159mm (6.26in). Approximate weight: 226g (8oz). Fits Canon EF 500mm f/4.5L USM.