PartsSquare 30pcs Nylon Bumper Car Retainer Clips Plastic Fasteners Kit Fender Liner Fastener Rivet Door Trim Panel Clip Push Type Retainer Replacement for Buick Cadillac Chevrolet GMC Pontiac Hummer Package Content : 30pcs Plastic Rivets Fastener Application: Door Panel Retainer (Direct replacement, no need to modify) Size (Head/Stem Length/Stem Diameter/Fit Hole): Bottom:18.5 Top:19.5/17/11mm; /Bottom:0.73 Top:0.77/0.66 inch Item condition: Brand New. Material: Plastic, Nylon