Brushes available with Nylon and Stainless bristles. Cleaning Brush Nylon for gross contamination in instruments. Cleaning Brush Stainless bristles for Large Burs & Reamers. The following brushis dual ended -one end has 3 rows of bristels, the other has a single row for delicate work. Orthopaedic cleaning brush is double ended with superfine soft stainless steel bristles. General instrumentation is the same as above but with nylon bristles.