Cat Cap and Plug Kit protects against damage, dirt, moisture, and corrosion during storage, shipping, and repair. Can also be used during the replacement of hoses and fittings to avoid fluid loss and eliminate fluid contamination. Attributes: Kit includes three individual plastic boxes containing cap plugs and tapered cap plugs. Three individual plastic boxes all found in one kit to keep caps/plugs organized and clean. Tapered caps/plugs are designed to plug multiple inner diameters and cap multiple outside diameters.