This is a new item from SP Technologies, billet aluminum wash plug kit for the Kinsler 305 RS Sprint Car injectors. Kit comes with the (4) wash plug covers and also includes a storage bag. These wash plugs will allow you to safely wash your engine without fear of getting water into the intake. They are a big upgrade from using paper towels and plastic caps. Covers are anodized black with the laser engraved SP Tech logo.