the materilas is steel.the size is 220x87 and 218x85.[...]

HSS twist drills DIN 338, fully ground with splitpoint, M35, Cobalt,amber finish (135° degree split point)[...]

with wooden handle or plastic handle with pure bristle or nylon.[...]

s-t steel wire,hardened,straight.for heavy-duty use such as the removal of paint,scale,corrosing of all kinds and the cleaning of weld seams and spot welds[...]