These black plastic auto expansion push pin clips are universal car retainer fasteners made of high-toughness nylon. The split expansion claw structure provides tight clamping force to prevent looseness and abnormal driving noise. With cross slot head design, they can be quickly installed and removed with a Phillips screwdriver, perfectly fit 8mm mounting holes for most vehicles. Widely applied to fix fender liner, bumper, mud guard, engine under shield, trunk and interior door trim panels, durable against high and low temperature without cracking or deformation.