GM Hood Panel Insulation Retainers Clips (Hole Size 1/4", Head Diameter 2", Stem Length 3/4") (GM # 3078511, 3977775) - Package of 15 GM Hood Panel Insulation Retainer Clips 3078511, 3977775 1964-On Hole Size: 1/4" Head Diameter: 2" Stem Length: 3/4" Pack of 15