Brightly Colored Silicone Vacuum Hoses - Add visual interest under the hood. Each Underhood Detailing Kit includes: the following lengths of hose 10' of 3.5mm, 15' of 4.0mm, 6' of 6.0mm, and 4' of 8.0mm and a hose cutter, slitter, pk. of 30 blue ties, Hose Techniques stickers and instructions.