Material Grade: C 45. Usage/Application: AUTOMOTIVE PARTS / GEARS / PINIONS / SHAFTINGS. Shape: ROUND/SQ./ HEX. Single Piece Length: 3 - 6 - 12 MTR. Material: Carbon Steel. Size: DIA 5 MM TO DIA 400 MM. Technique: HOT ROLLED / COLD ROLLED / FORGED. Surface Finish: BRIGHT / BLACK.