In single banded spiral brushes with an internal diameter of 5 mm upwards, the bristles are clamped down by a core thread in a U-shaped steel channel. These brushes are available in any length, with various channel widths and a full range of bristle materials. The single band design is suitable for practically every conceivable application. KOTI produces standard channel widths for the single band versions. Widths can vary from 2.5 mm to 12 mm.