Stem Diameter: 5.8mm Head Diameter: 25mm Stem Length: 25.5mm Black Nylon Slotted Grille Retainers Use With # FN11984 Used On: Camaro 2010, Cadillac SRS & SRX Compare with: GM # 11610747, Auveco # 21301, Car Pak # 99-8867, 998867, Crest / Midwest # CRX20013, Disco # 11983PK, 11983B, Kent / Lawson # P85351, Winzer # 502.5257