3D printed specifically for the Canon 500mm F4 I.S. MKii, this front lens cap ensures your lens remains protected from dust and dirt when not in use. It will fit onto the lens easily with the hood on.
It will no doubt fit other lenses with an inside diameter of 128mm to 130mm but I've no way of trying it in anything else, it extends 10mm into the lens.
I can print it in black or green, green may seem strange, but you can never lose it in the dark shadows of a car boot!!Just message when purchasing to specify the colour.