HIGH-QUALITY MATERIAL: This drill set is made of high-speed steel material, which has high hardness. A great choice for you.
STABLE STRUCTURE: High speed steel cobalt drill bit has a stable structure and excellent drilling performance, high drilling efficiency.
APPLICATION: High-speed steel cobalt drill bit set is a practical tool, specially used for pearl bead punching, jewelry processing and manufacturing.
EASY TO CARRY: This cobalt drill bit set is placed in a plastic storage box, convenient for you to carry and easy to use. You can take it to the place that you want.
If you have any questions about this product, please feel to us.