SIZE AND QUANTITY: This set includes 4 cleaning brushes, perfect for cleaning straws, baby bottles, Starbucks mugs, hummingbird feeders, and more. QUALITY: These long straw brushes are made from food-grade stainless steel wire. The long, soft nylon bristles are durable and won't leave behind fuzz in your straw like chenille pipe cleaners. The end coating protects glass straws or tubing from scratching the inside. Buy with confidence! VERSATILE USE: These pipe cleaners can be used on a wide variety of straws, tubes, hoses, and any narrow-mouthed bottles made of any material, as well as for cleaning narrow spouts, coffee pots, sink drains, hummingbird feeders, and other hard-to-reach nooks and crannies. HOW TO USE: These straw brush cleaners are very easy to use. Simply insert into the tube, rotate, remove, and clean. It's reusable, and best used with a little dish soap and warm water. When not in use, store in a dry place. You can also simply place it on the top rack of your dishwasher and hang to dry.