Product Description
Made of tungsten vanadium steel with 3/32" shanks. Individual sizes packaged in boxes of 6. Made in Switzerland.
(Also available in a set of 12 popular sizes, see "Related Products" below.)
(Also available in a set of 12 popular sizes, see "Related Products" below.)
It happens to everyone, a drill bit breaks and the business end is stuck inside the hole in your precious metal jewelry. If you can't reach it, how will you get it out? Place the ring into common Pickling Solution. The drill bit will dissolve in about 15 minutes.
(Caution: do not put stones into Pickling Solution.)
| B&S Gauge |
Millimeter (mm) |
Inch (decimal) |
Inch (fraction) |
|---|---|---|---|
| 1 | 7.348 | 0.289 | — |
| 2 | 6.543 | 0.258 | — |
| — | 6.350 | 0.250 | 1/4 |
| — | 5.953 | 0.234 | 15/64 |
| 3 | 5.827 | 0.229 | — |
| — | 5.556 | 0.219 | 7/32 |
| 4 | 5.189 | 0.204 | — |
| — | 5.154 | 0.203 | 13/64 |
| — | 4.762 | 0.188 | 3/16 |
| 5 | 4.621 | 0.182 | — |
| — | 4.366 | 0.172 | 11/64 |
| 6 | 4.115 | 0.162 | — |
| — | 3.969 | 0.156 | 5/32 |
| 7 | 3.664 | 0.144 | — |
| — | 3.572 | 0.141 | 9/64 |
| 8 | 3.263 | 0.128 | — |
| — | 3.175 | 0.125 | 1/8 |
| 9 | 2.906 | 0.114 | — |
| — | 2.778 | 0.109 | 7/64 |
| 10 | 2.588 | 0.102 | — |
| — | 2.381 | 0.094 | 3/32 |
| 11 | 2.304 | 0.091 | — |
| 12 | 2.052 | 0.081 | — |
| — | 1.984 | 0.078 | 5/64 |
| 13 | 1.828 | 0.072 | — |
| 14 | 1.628 | 0.064 | — |
| — | 1.588 | 0.063 | 1/16 |
| 15 | 1.449 | 0.057 | — |
| 16 | 1.291 | 0.051 | — |
| — | 1.191 | 0.047 | 3/64 |
| 17 | 1.149 | 0.045 | — |
| 18 | 1.024 | 0.040 | — |
| 19 | 0.912 | 0.036 | — |
| 20 | 0.812 | 0.032 | — |
| — | 0.795 | 0.031 | 1/32 |
| 21 | 0.723 | 0.028 | — |
| 22 | 0.644 | 0.025 | — |
| 23 | 0.573 | 0.023 | — |
| 24 | 0.511 | 0.020 | — |
| 25 | 0.455 | 0.018 | — |
| 26 | 0.405 | 0.016 | — |
| — | 0.396 | 0.015 | 1/64 |
| 27 | 0.360 | 0.014 | — |
| 28 | 0.321 | 0.013 | — |
| 29 | 0.286 | 0.011 | — |
| 30 | 0.255 | 0.010 | — |
| 31 | 0.227 | 0.0089 | — |
| 32 | 0.202 | 0.0080 | — |
| 33 | 0.180 | 0.0071 | — |
| 34 | 0.160 | 0.0063 | — |
| 35 | 0.142 | 0.0056 | — |
| 36 | 0.127 | 0.0050 | — |
| 37 | 0.113 | 0.0045 | — |
| 38 | 0.101 | 0.0040 | — |
| 39 | 0.090 | 0.0035 | — |
| 40 | 0.080 | 0.0031 | — |
| B&S Gauge |
Millimeter (mm) |
Inch (decimal) |
Inch (fraction) |
| Diameter (mm) |
Diameter (inches) |
|---|---|
| 0.50 | 0.0197 |
| 0.60 | 0.0236 |
| 0.70 | 0.0276 |
| 0.80 | 0.0315 |
| 0.90 | 0.0354 |
| 1.00 | 0.0393 |
| 1.10 | 0.0433 |
| 1.20 | 0.0472 |
| 1.40 | 0.0551 |
| 1.50 | 0.0591 |
| 1.60 | 0.0630 |
| 1.70 | 0.0669 |
| 1.80 | 0.0709 |
| 1.90 | 0.0748 |
| 2.10 | 0.0827 |
| 2.30 | 0.0906 |