Maybe one of these similar products would be of interest:-

Fotover ET-60 Lens Hood Replacement Sun Shade for Canon EF 75-300mm f/4-5.6 II/II USM&EF 75-300mm f/4-5.6 III/III USM&EF 90-300mm f/4.5-5.6/USM&EF-S 55-250mm f/4-5.6 IS/IS II Lens

Canon EF 300mm f/4L IS USM Telephoto Fixed Lens for Canon SLR Cameras - 2530A004 Black

USED Canon EF 300mm f2.8 L IS II USM Lens

USED Canon EF 300mm f4 L IS USM Lens

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