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Dormer Jewelers Twist Drill 20 Piece Set - Sizes 61 to 80

Jewelers twist drill set
Your Price: $39.95
Item Number: 28.0540

High quality drills have straight shanks and are accurately ground before being carefully tempered. This set includes 20 drills in ISO sizes 61 to 80. They are packaged in a convenient case with a slide cover that allows you to remove only one drill at a time, keeping the other drills securely in their place. You can also purchase these drills individually as replacement or set expanders to include more sizes. The other sizes available range from stub size 80 through 30 (.34 mm to 3.26 mm).

  • Drill assortment offers 20 drills in plastic storage case with sizes clearly labeled
  • Sizes included (#61-80): .0390" – .0135" inches or .990 - .343mm
  • Made of high speed steel

Drill# Inches MM   Drill # Inches MM   Drill # Inches MM   Drill # Inches MM   Drill # Inches MM
30 .1285 3.264   41 .0960 2.438   52 .0635 1.613   63 .0370 0.940   74 .0225 0.572
31 .1200 3.048   42 .0935 2.378   53 .0595 1.512   64 .0360 0.914   75 .0210 0.533
32 .1160 2.946   43 .0890 2.261   54 .0550 1.397   65 .0350 0.889   76 .0200 0.508
33 .1130 2.870   44 .0860 2.184   55 .0520 1.321   66 .0330 0.838   77 .0180 0.457
34 .1110 2.819   45 .0820 2.083   56 .0465 1.181   67 .0320 0.813   78 .0160 0.406
35 .1100 2.794   46 .0810 2.057   57 .0430 1.092   68 .0310 0.787   79 .0145 0.369
36 .1065 2.705   47 .0785 1.944   58 .0420 1.067   69 .0292 0.734   80 .0135 0.343
37 .1040 2.642   48 .0760 1.930   59 .0410 1.041   70 .0280 0.712        
38 .1015 2.578   49 .0730 1.854   60 .0400 1.016   71 .0260 0.660        
39 .0995 2.528   50 .0700 1.778   61 .0390 0.990   72 .0250 0.635        
40 .0980 2.489   51 .0670 1.702   62 .0380 0.965   73 .0240 0.610        

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