stonylab 10 Pack Tube Brushes, Bristle Test Tube Bottle Wash Cleaning Brushes with Radial Tufted End for Laboratory, Size Assorted

10 packs of tube brushes in assorted size; Size S x 3 packs, Size M x 4 packs; Size L x 3 packs Size S: 17 mm diameter, 73 mm bristle length, and 180 mm total length; size M: 25 mm diameter, 105 mm bristle length, and 240 mm total length; size L: 35 mm diameter, 113 mm bristle length, and 270 mm total length Brushes can be bent for easy removal of stains and dirt without scratching labware; feature a small ring at the end of handle for convenient storage For use in cleaning tubes, bottles, cylinders, pipes, or glass barrels; ideal for chemistry, biology, laboratory, kitchen, industry, and other applications Warranty: StonyLab 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied