FRONT WHEEL ARCH LINERS
Wheel arch liners, also known as inner fender liners, are protective covers installed inside a vehicle's wheel arches. Typically made from plastic, rubber, or synthetic fabric, they serve several purposes:


Protect the wheel well from dirt, debris, water, and road salt.


Prevent corrosion and damage to body panels and internal components like wiring and suspension.


Reduce noise from the road and tires.


Improve aerodynamics in some vehicle designs.


They are usually fitted between the wheel and the vehicle's bodywork and are found in both front and rear wheel wells.

WEEL ARCH LINER CLIPS
From my testing, I would recommend purchasing both 5mm and 6mm plastic clips. I have had good success with the two below 
 6mm Plastic Rivets 
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 5mm Plastic Rivets 
 
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 Plastic rivet gun 
 
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