12PK Nylon Cleaning Brushes, 9.25" - Fan Shaped Ends - 0.5" Diameter

This twelve-pack contains cleaning brushes measuring 9.25 inches overall, with a bristle section 3.5 inches long and 0.5 inches in diameter and a handle of 5.75 inches. They are sized for tubes and openings from 0.3 to 0.5 inches across. The bristles are fanned at the end rather than cut straight. A straight-cut brush reaches the wall of a tube but skips the rounded bottom where residue collects, while splayed bristles spread into the curve and reach the corner where the wall meets the base. The bristles are semi-stiff nylon, firm enough to dislodge residue without scratching glass. The handle is twisted stainless steel, corrosion resistant against detergent and solvent and flexible enough to be bent to reach into an angled vessel. A looped end allows the brush to hang and dry. This size suits narrow test tubes, small graduated cylinders, and pipettes.