There are 4 categories of insulative toothbrush style brushes. These include the 21 Series, double-headed brushes, single-headed brushes, and single-headed, hand-laced brushes. Removing dirt and debris is easy with this set of brushes made with Goat hair, Hog bristle, Horse hair, nylon, PEEK, polypropylene, or Thunderon® fill material set in an acetal, aluminum, plastic or stainless steel handle.
Other selectable specifications include, handle length, handle width, brush face length, brush face width, handle diameter, brush face diameter, brush diameter, number of rows, bristle diameter, and trim length.