4241 Hss Twist Drill
A black diamond is a type of diamond or material that resembles a diamond but has undergone specific processing. It typically has a deep black or dark appearance, high hardness, high resistance to wear, and a distinctive sheen. It could be an artificial material (like black cubic zirconia, black silicon carbide, etc.), a naturally occurring black diamond with graphite inclusions, or a diamond that has been treated with high temperatures and pressures.
ITEM NO:YDS-0152
Size
6-11.9~100mm
