The 6 or 8 Double Row Helical pattern (6DRH or 8DRH) is the most popular brush fill pattern for main sweeping brushes. In this fill pattern, the rows of bristles pick up fine debris while the empty spaces in between the rows trap bulkier litter. The DR pattern is a good choice for many customers because it gives good performance on both fine and bulky debris. This pattern is available in all fill materials.

Excellent material for dust control and sweeping fine debris, but has a relatively shorter wear life than other materials. Must not be used on wet floors. Recommended for use sweeping carpets, as natural fiber will not create static. Poor wear life.