Brush Test tube - Bristle, with fan shaped end, L 80mm, dia 12mm, total length 230mm-EIS-CH0204A offers a thoughtfully designed, durable resource for hands-on learning. This semi-stiff fiber bristle brush is perfect for scrubbing narrow glassware, including test tubes, measuring cylinders, beakers and more. The fanned end allows you to easily clean rounded surfaces and corners. The stainless steel, twisted handle is semi-flexible, allowing you to modify the shape as needed. Looped end for easy hanging. Designed for professional science laboratories but is perfect for a variety of applications in the home or garage. Brush measures 9.25" in total length, with the bristle section measuring 3.75" and 0.5" in diameter, and handle measuring 5.5". Fits tubes, pipes, bottles, cylinders, flasks and straws with diameters of 0.3" - 0.5".