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PREMIUM GOLD COBALT TWIST DRILLS
Grobet is proud to present this line of cobalt steel twist drills. Ideal for platinum, stainless, silicon-
chrome and chrome- nickel. These drills will last 30 times longer than standard drills.
Sold by pack of 10.
It is highly recommended that you use water or coolant when working with these drills.
Also, try our Pro-Cut lubricant - item No. 19.928.
     
  Part No.  
Drill Size
Size
  28.950  
50
  
.0700"
  
  28.951  
51
  
.0670"
  
  28.952  
52
  
.0635"
  
  28.953  
53
  
.0595"
  
  28.954  
54
  
.0550"
  
  28.955  
55
  
.0520"
  
  28.956  
56
  
.0465"
  
  28.957  
57
  
.0430"
  
  28.958  
58
  
.0420"
  
  28.959  
59
  
.0410"
  
  28.960  
60
  
.0400"
  
  28.961  
61
  
.0390"
  
  28.962  
62
  
.0380"
  
  28.963  
63
  
.0370"
  
  28.964  
64
  
.0360"
  
  28.965  
65
  
.0350"
  
  28.966  
66
  
.0330"
  
  28.967  
67
  
.0320"
  
  28.968  
68
  
.0310"
  
  28.969  
69
  
.0292"
  
  28.970  
70
  
.0280"
  
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