This "five-level" wash brush (also referred to as "tri-level) has a yellow durastrand bristles that are flagged abd softer on the ends. Considered a medium stiff bristle with the soft flag, this brush is used mainly for fleet vehicles where a more aggressive and quicker wash process is needed.
The bristles wrap around the block to protect from bumping and damaging the vehicle's surface. This fountain/flow-thru block accepts all standard acme threaded handles.
Bristles are 2.5" in length, Block is 8" in length.