This is a simple cheap brush for cleaning sink drains. The brush should be printed at 0.2mm layer height with a 0.4mm nozzle. Once the brush is printed use an exacto knife to cut the bristles out of the cylinder, some of the bristles will fall out, THIS IS OK. The handle should be printed with a brim at 0.2 mm layer height. once both are printed insert the handle into the brush, then stick a piece of wire in the hole and bend it around the handle.