This scrubbing brush with union bristles is not quite classic, as its body made of untreated beech wood is a little longer than many of its kind at 40 centimetres, but above all it is nice and narrow, measuring just four centimetres. This means you can get into tight spaces and can also transfer the force well to the bristles. The bristles are hand-pulled and consist of the natural material union, which is the name given to the combination of natural fiber - extremely elastic agave fibers that are resistant to acid, lye and heat - and bassine, the strong leaf fibers of the sago palm. Both fibers are very break-resistant and resistant to moisture, so you can use this scrubbing brush extensively and with plenty of water to tackle all household and outdoor surfaces. A threaded aluminum sleeve is incorporated into the body to accommodate a suitable handle.