Bumpers come in a variety of styles and shapes, both dependent on the make and model of the car and can be added to and customised in a number of ways.
Some bumpers will have a towing eye, on either the front or rear bumper, which is where a rope can be attached so that the car can be towed. The towing eye is commonly made of steel and is basically a solid ring or hook.
To protect and make the overall look of the car sleeker and more aesthetically pleasing, a towing eye cover is fitted onto the towing eye, usually secured by screws. The type and style of the towing eye cover will depend on the make and model of car and the specific shape and form of the bumper.
If the bumper towing eye cover is damaged in an accident, for example, or has simply worn out, it's advisable to buy a new or replacement part that has been manufactured to fit the make, model and year of your car.