Plastic pushin rivet fasteners designed for vehicle trim and bumper retention. These black plastic retainers provide a simple, toolfriendly way to secure side skirts, bumpers, interior panels and other trim pieces on cars and larger vehicles. The kit contains four common sizes to fit a range of hole diameters and panel thicknesses. Key benefits Simple installation: pushin design secures panels quickly without nuts or screws. Reliable hold: stem expands in the hole for a snug fit that reduces rattle and movement. Versatile fit: four different sizes cover typical hole diameters used on cars, trucks, buses, trains and planes. Lightweight and nonconductive: plastic construction will not add significant weight or create electrical contact. Product specifications Material: Plastic Color: Black Type 1: 10 pcs Head diameter (max.): 20 mm Stem length: 9.8 mm Fit hole diameter: 7.7 mm Type 2: 10 pcs Head diameter (max.): 19.4 mm Stem length: 24 mm Fit hole diameter: 8.7 mm Type 3: 10 pcs Head diameter (max.): 19.8 mm Stem length: 20.8 mm Fit hole diameter: 10.5 mm Type 4: 10 pcs Head diameter (max.): 18.5 mm Stem length: 28.5 mm Fit hole diameter: 9.5 mm General fit range: approximately 8 mm to 10 mm hole diameters, depending on type Package included: 40 pcs bumper retainers (10 pcs of each type) Typical applications and use scenarios Replacing missing or worn retainers when reinstalling bumper covers or side skirts after . Securing interior trim panels or wheel well liners during routine maintenance or bodywork. Fastening trim pieces on larger vehicles such as trucks, buses or recreational aircraft where pushin plastic retainers are used. Installation tips Select the retainer type that matches the hole diameter and panel thickness. Push the stem into the hole until the head is flush with the surface. For tight fits, start the stem and press evenly to avoid tilting. Removal can be done with a trim removal tool or flat screwdriver, taking care not to damage surrounding panels. Notes Allow slight measurement variation due to manual measurement. Color may vary slightly between displays.