Sisal, Wood, Stainless Steel ASSORTED SIZE CLEANING BRUSHES #1 Extra Long Flexible Large Wood Handle Bottle Brush (16" x 2.5" - 7.8 Sisal Bristle Length) kitchen bottle brush, #2 Narrow Spout Tube Brush (10" x 1" - 5.1 Sisal Bristle Length) for narrow neck bottles / #3 Lid and Utility Brush (6.3" X .6" - 2.1 Sisal Bristle Length), #4 Long Natural Bristle Straw Cleaner (10" x .19 - Sisal Bristle Length 2.36) PLANET and PRICE FRIENDLY - Versatile all natural wholesale bottle brush set cleaning kit for baby bottles including Avent bottles, kombucha and beer brewing bottles, wine and carboy decantor, sports water bottles, spiral glass pipe and weed smoking bong, and bathroom sinks STIFF SISAL SCRUBBING POWER YET NON-SCRATCH bottle brush cleaners for bulk scrubbing & cleaning your Water HydroFlask Tumbler, Boon, Munchkin, Playtex, rTic, Simple Modern, Yeti, Narrow Neck Swell / S'well, Thermos, Hummingbird Feeders, Ello, Ozark, Contigo, Hydro Flask International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.