Polystyrene is perfect for when the Nylon brush will not cut into the dirt or oily surface you are trying to clean wheels tires, diesel trucks buses and fishing boats. Just a little stiffer than Nylon still safe for automotive paint
Durable bristle that resists water, oil, and chemicals. It can be crimped for aggressive cleaning in scrub brushes and has excellent flexibility and durability. Ends can be flagged for fine body and wash brushes.