Features: This lens hood maximizes the amount of hood coverage for the minimum amount of weight and hood area because of its shape. The main function of the lens hood is to shade the lens from stray light, improving your contrast and for image quality. In inclement weather, it can assist in keeping moisture or wind-blown debris off the lens. Made from high quality aluminium alloy Easy to fit and remove by screwing straight on to the filter thread Shade lens from stray light, improving your contrast and for image quality Protects the lens from rain, moisture or wind-blown debris. Suitable EF-S 24mm f2.8 for STM EF 40mm f2.8 for STM lens For use with:EF-S 24mm f/2.8 for STM lens (52mm)EF 40mm f/2.8 for STM lens (52mm) Specifications: Thread: 52mm Material: Aluminium Alloy Color: Black ) Not manufactured Instructions: Just screw the base of the hood onto your lens 52mm filter thread or onto a filter if fitted. Package Includes: 1 x ES-52 Metal Hood Shade note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. please make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!