Slick Stixxx & Car Show Prep Tools Slick Stixxx and the new Slick Stixxx Brush Attachments are great for Concours type detailing. You are able to use these tools to get into all the little nooks and crannies. Whether you are detailing engines, interiors, motorcycles, classics or antique cars, Slick Stixxx will assist you with finishing your project and make you feel good about what you accomplished.