61-80-Pc. HSS WIRE DRILL SET 20pc
Hss Twist Drill Bits FREE MICRO CHUCK INCLUDED
great for jewelers model makers and doing carbi jets
Process:Fully Ground
Material:High Speed Steel
Point Angle:118 Degree...
HSS twist drill bits:
|
No. |
Dia. |
|
61 |
.0390 |
|
62 |
.0380 |
|
63 |
.0370 |
|
64 |
.0360 |
|
65 |
.0350 |
|
66 |
.0330 |
|
67 |
.0320 |
|
68 |
.0310 |
|
69 |
.0292 |
|
70 |
.0280 |
|
71 |
.0260 |
|
72 |
.0250 |
|
73 |
.0240 |
|
74 |
.0225 |
|
75 |
.0210 |
|
76 |
.0200 |
|
77 |
.0180 |
|
78 |
.0160 |
|
79 |
.0145 |
|
80 |
.0135 |
THESE NUMBER OR WIRE DRILL SETS COME IN A STEEL BOX ARE MANUFACTURED from HSS
Please Note! when buying very small drills like these they may have a slight bent in them this is very normal form such small drills
our normal practice with such small drills is to run them between 600-1000 rpm , use a wooden stick allow drill to just enter the wood and straight drill to suit.