Good And Toughness: High for speed steel have high hardness, good and toughness, also stable quality
Material: High for speed steel
Uses: Suitable for jewelry, watches, for pcb
Use With Various: for twist drill bits can be used with various and for a experience
Summary Of Selling Points: Sophisticated handicrafts, selling description Our drill bits are carefully crafted handicrafts, one piece, and adopt a fine spiral design, which can make the work efficient and provide you with the best use experience