Ideal for laboratory use, this set of cleaning brushes includes multiple sizes to accommodate different glassware. The brushes are crafted with materials, ensuring longevity and reliability. They are ideal for maintaining the cleanliness of test tubes, beakers, and other lab equipment, helping to ensure accurate results in your experiments. Features -Color:Light Brown -Material:Stainless steel bristle -Size:26.00X3.50X3.50cm/10.22X1.38X1.38in -Size:23.00X3.00X3.00cm/9.04X1.18X1.18in -Size:19.50X2.50X2.50cm/7.66X0.98X0.98in -Three size options: comes in small, medium, and large sizes to fit different glass test tubes, catering to various experimental requirements. -Thorough cleaning: the soft and densely packed bristles ensure a thorough cleaning of the test tube interiors, eliminating all dirt and residues. - construction: constructed with ideal nylon bristles and robust plastic handles, these brushes are built to last and maintain their shape. -Spacesaving design: each brush features a hanging string for easy suspension and storage, optimizing your workspace. -Versatile use: ideal for cleaning not only test tubes but also other laboratory apparatus and containers Package list: 6pcs Laboratory cleaning bottle brush