Each brush has unique dimension and shape for different cleaning purpose and hard to reach corners. Stainless steel body, durable and resilient nylon bristles provide excellent cleaning performance, they are odorless and non scratch, work great on glass, plastic, porcelain, aluminum, stainless steel and more. | 15.3" Extra long bottle brush for narrow neck bottle easily reaches into long narrow neck wine & beer bottles, carafes, thermos, perfect for most bottles with narrow neck and long neck. 13.2" Water bottle brush with generous bristles on the top allows cleaning all standard & wide neck bottles and other sports bottles, baby bottles, tumblers and more. | 13.2" Long Tube Brush: Used to clean pipes, long and narrow space between machine parts. 8.1" Spout/Lid Brush & Short Bottle Brush: Works great for crevices of lids, spout of kettles etc. 12" Straw Brush: Great for cleaning reusable straws made from silicone or stainless steel thoroughly. | Comes with a compatible MR.SIGA cleaning brush storage base, which is built with 5 holders and 1 tilted base. The 2 bigger holders are for the 2 big brushes, while the rest 3 are for the 3 smaller brushes. The tilted base collects drips from brushes. | This bottle cleaning brush set with different sizes and shapes will accommodate various bottles and straw diameters, ensuring thorough cleaning.