170 pcs of twist drill set

HSS #4241,roll forged with edge ground ; split point 118 degree; HRC 57-60.15 drills in the following sizes:1.00mm and 1.50mm

detail intruduction

HSS #4241,roll forged with edge ground ;  split point 118 degree; HRC 57-60. 

15 drills in the following sizes:1.00mm and 1.50mm

12drills2.00mm-2.50mm-3.00mm-3.50mm15

10 drills in the following mm sizes: 4.00 to 4.50-5.00 to 5.50-6.00 to

6.50 10 6 drills the following sizes:7.00mm and 7.50mm 6

4 drill in mm Sizes: 8.00 to 8.50-9.00-9.50 to 10.00 4