This is widely used for brush material. There is mainly Nylon 6, 66, 610, 612. Nylon absorbs water rather than other synthetic.
Nylon 6(120T・125T Series)
Natural（Diameter）：0.07, 0.107, 0.132, 0.152, 0.170, 0.210, 2.2 mm
Nylon 66 (305T Series)
It is mainly used for hair brush & industrial brush.
Hair Length： 4.6, 5 cm （for hair brush）
Nylon 610(200T・205T Series)
It is high quality N610 material. Mainly used for toothbrush & some cleaning brush to clean panel.
Natural（Diameter）： 0.05, 0.07, 0.09, 0.10, 0.12, 0.135, 0.16, 0.18, 0.21 mm
It has high quality material. Mainly used for toothbrush, Interdental Brush, Industrial Brush, and Cosmetic Brush.
PBT is more durable than Nylon. On the other hand, water resolution is not as good as Nylon. Mainly used for industrial & Toothbrush.
Natural： 0.2, 0.25 mm
It has high durability with relatively reasonable price. Mainly used for industrial brush.
Also, we have a variety of bristles. Please feel free to ask anything about the material of monofilament and bristle.