Proform 141-333 Chrome Air Cleaner Wing Nut with Large Red Bowtie Logo for 1/4-20" Thread Constructed from high-quality die- cast aluminum material Featuring a chrome finish, these nuts are a great way to customize your set up and show your Chevy pride Designed with a Black Chevy ""Botwie"" logo center with a red outline Fits air cleaner studs measuring 1/4"" -20 or 5/16"" - 18