This heavy-duty mill duster has brown polypropylene bristle and a hardwood handle. Designed with no side-flare and a heavily filled front end for aggressive dusting and cleaning. Ideal for cleaning metal chips from milling machines and lathes. This high-quality brush has a 5 x 16 row pattern with a 1-3/4" trim and a brush face of 8" x 1-3/4". Handle length is 13" and has a hang-up hole for convenient storage.