Manufactured in the USA according to National Aerospace Specification 907 standards, Prohelix exclusive, professional-grade quality drill bits provide the robustness required by auto mechanics for heavy-duty piercing. Prohelix drill bits can drill through hard metals like Boron steel with great precision and deliver a higher resistance to friction than most options available on the market. Prohelix drill bits simply outperform the competition.
Cobalt, titanium or gold oxide coatings
Have self-lubricating properties which reduce resistance for a smoother finish.
135° self-centering split point tip
Offers more bite and accurate starting without the need for a center punch.
Resists up to 58 Rockwell-C hardness
Capable of drilling heavy-duty Boron steel of vehicle chassis.
Jobber length drill bits
Made longer for more flex and less breakage.
3-flat shank
Prevents bit from slipping.
| Item (Unit) | Item (QTY per pack) | Diameter (in) | Overall length (in) |
| PRO-09201 (QTY 12) | 1/16 | 1-7/8 | |
| PRO-09211 (QTY 12) | 5/64 | 2 | |
| PRO-09221 (QTY 12) | 3/32 | 2-1/4 | |
| PRO-09231 (QTY 12) | 7/64 | 2-5/8 | |
| PRO-09241 (QTY 12) | 1/8 | 2-3/4 | |
| PRO-09251 (QTY 12) | 9/64 | 2-7/8 | |
| PRO-092611 | PRO-09261 (QTY 12) | 5/32 | 3-1/8 |
| PRO-09271 (QTY 12) | 11/64 | 3-1/4 | |
| PRO-09282 (QTY 12) | 3/16 | 3-1/2 | |
| PRO-092921 | PRO-09292 (QTY 12) | 13/64 | 3-5/8 |
| PRO-093021 | PRO-09302 (QTY 12) | 7/32 | 3-3/4 |
| PRO-09312 (QTY 12) | 15/64 | 3-7/8 | |
| PRO-093211 | PRO-09321 (QTY 12) | 1/4 | 4 |
| PRO-093311 | PRO-09331 (QTY 12) | 17/64 | 4-1/8 |
| PRO-093411 | PRO-09341 (QTY 12) | 9/32 | 4-1/4 |
| PRO-093511 | PRO-09351 (QTY 6) | 19/64 | 4-3/8 |
| PRO-09361 (QTY 6) | 5/16 | 4-1/2 | |
| PRO-093711 | PRO-09371 (QTY 6) | 21/64 | 4-5/8 |
| PRO-093811 | PRO-09381 (QTY 6) | 11/32 | 4-3/4 |
| PRO-093911 | PRO-09391 (QTY 6) | 23/64 | 4-7/8 |
| PRO-09401 (QTY 6) | 3/8 | 5 | |
| PRO-09411 (QTY 6) | 25/64 | 5-1/8 | |
| PRO-09421 (QTY 6) | 13/32 | 5-1/4 | |
| PRO-094311 | PRO-09431 (QTY 6) | 27/64 | 5-3/8 |
| PRO-09441 (QTY 6) | 7/16 | 5-1/2 | |
| PRO-094511 | PRO-09451 (QTY 6) | 29/64 | 5-5/8 |
| PRO-09461 (QTY 6) | 15/32 | 5-3/4 | |
| PRO-094711 | PRO-09471 (QTY 6) | 31/64 | 5-7/8 |
| PRO-09481 (QTY 6) | 1/2 | 6 |
| Item | QTY per pack | Diameter |
| PRO-46912 | 15 | 1/16 – 1/2 x 1/32 |
| PRO-46922 | 21 | 1/16 – 3/8 x 1/64 |
| PRO-58660 | 25 | 1.0mm – 13.0mm x .5mm |
| PRO-46932 | 29 | 1/16 – 1/2 x 1/64 |
| PRO-93840 | 115 | 1/16 – 1/2 x 1/64 + A-Z & 1-60 |
| Item | Diameter (in) | Item | Diameter (in) |
| PRO-29550 | 33/64 | PRO-29770 | 55/64 |
| PRO-29560 | 17/32 | PRO-29780 | 7/8 |
| PRO-29570 | 35/64 | PRO-29790 | 57/64 |
| PRO-29580 | 9/16 | PRO-29800 | 29/32 |
| PRO-29590 | 37/64 | PRO-29810 | 59/64 |
| PRO-29600 | 19/32 | PRO-29820 | 15/16 |
| PRO-29610 | 29/64 | PRO-29830 | 61/64 |
| PRO-29620 | 5/8 | PRO-29840 | 31/32 |
| PRO-29630 | 41/64 | PRO-29850 | 63/64 |
| PRO-29640 | 21/32 | PRO-29860 | 1 |
| PRO-29650 | 43/64 | PRO-29870 | 1-1/32 |
| PRO-29660 | 11/16 | PRO-29880 | 1-1/16 |
| PRO-29670 | 45/64 | PRO-29890 | 1-3/32 |
| PRO-29680 | 23/32 | PRO-29900 | 1-1/8 |
| PRO-29690 | 47/64 | PRO-29910 | 1-5/32 |
| PRO-29700 | 3/4 | PRO-29920 | 1-3/16 |
| PRO-29710 | 49/64 | PRO-29930 | 1-7/32 |
| PRO-29720 | 25/32 | PRO-29940 | 1-1/4 |
| PRO-29730 | 51/64 | PRO-29950 | 1-5/16 |
| PRO-29740 | 13/16 | PRO-29960 | 1-3/8 |
| PRO-29750 | 53/64 | PRO-29970 | 1-7/16 |
| PRO-29760 | 27/32 | PRO-29980 | 1-1/2 |
| Item | QTY per pack | Diameter |
| PRO-92400 | 8 | 9/16 – 1 x 1/16 |
PRO-45010
12″L x 14″P x 14″H – 29 clearly identified dividers for jobber length drill bits from 1/16 to 1/2.
| Item | Diameter (in) | Item | Diameter (in) |
| PRO-92430 | 1/16 | PRO-92442 | 11/64 |
| PRO-23150 | 5/64 | PRO-92450 | 3/16 |
| PRO-89290 | 3/32 | PRO-92443 | 13/64 |
| PRO-23160 | 7/64 | PRO-92444 | 7/32 |
| PRO-92440 | 1/8 | PRO-92451 | 15/64 |
| PRO-92441 | 9/64 | PRO-92460 | 1/4 |
| PRO-23170 | 5/32 | PRO-92452 | 17/64 |
| PRO-23180 | 19/64 | PRO-92482 | 13/32 |
| PRO-92470 | 4/16 | PRO-92483 | 27/64 |
| PRO-92471 | 21/64 | PRO-92490 | 7/16 |
| PRO-92472 | 11/32 | PRO-92491 | 29/64 |
| PRO-92473 | 23/64 | PRO-92492 | 15/32 |
| PRO-92480 | 3/8 | PRO-92493 | 31/64 |
| PRO-92481 | 25/64 | PRO-92500 | 1/2 |
| Item | QTY per pack | Diameter (in) |
| PRO-87650 | 8 | 1/16 – 1/2 x 1/16 |
| PRO-87651 | 12 | 1/16 – 5/16 x 1/32, 3/8, 7/16, 1/2 |
| Item | Diameter (in) | Point diameter (in) | Overall length (in) | Shank diameter (in) |
| PRO-06381 | 5/16 | 0.215 | 4-5/8 | 5/16 |
| PRO-06391 | 3/8 | 0.250 | 4-5/8 | 3/8 |
| PRO-06501 | 7/16 | 0.250 | 5-7/8 | 7/16 |
| PRO-06411 | 9/16 | 0.343 | 5-7/8 | 1/2 |
| PRO-06421 | 5/8 | 0.343 | 6-3/8 | 1/2 |
| PRO-06432 | 0.652 | 0.375 | 6-3/8 | 1/2 |
| PRO-06431 | 11/16 | 0.375 | 6-3/8 | 1/2 |
| PRO-06441 | 3/4 | 0.406 | 6-7/8 | 1/2 |
| PRO-06531 | 0.776 | 0.406 | 6-7/8 | 1/2 |
| PRO-06551 | 13/16 | 0.468 | 6-7/8 | 1/2 |
| PRO-06561 | 7/8 | 1/2 | 6-7/8 | 1/2 |
| PRO-06471 | 15/16 | 0.585 | 6-7/8 | 1/2 |
| PRO-06481 | 1 | 0.594 | 6-7/8 | 1/2 |
| PRO-06491 | 1-1/16 | 0.807 | 6-7/8 | 1/2 |
| PRO-06482 | 1-1/4 | 0.719 | 6-7/8 | 1/2 |
| Item | QTY per pack | Diameter (in) |
| PRO-12271 | 12 | 1/16 – 5/16 x 1/32, 3/8, 7/16, 1/2 |
| Item | Diameter (mm) | Overall length (in) |
| PRO-37660 | 6.5 | 3-5/8 |
| PRO-37470 | 8.0 | 1-3/4 |
| PRO-37670 | 8.0 | 3-5/8 |
| Item | QTY per pack | Description |
| PRO-35010 | 6 | Type 186: 6.5mm, 8.0mm & 10.0mm single-end (length of 1-3/4″) & 6.5mm, 8.0mm & 10.0mm twin end. |
| PRO-35050 | 4 | Type 187: 8.0mm & 10.0mm single-end & twin-end. |
| Item | Diameter (in) | Overall length (in) | Flute length (in) |
| PRO-95090 | 3/32 | 1-3/4 | 9/16 |
| PRO-95080 | 7/64 | 1-15/16 | 5/8 |
| PRO-95980 | 1/8 | 1-15/16 | 5/8 |
| PRO-95070 | 9/64 | 2 | 5/8 |
| PRO-95060 | 5/32 | 2-1/8 | 5/8 |
| PRO-95050 | 3/16 | 2-5/16 | 5/8 |
| PRO-95040 | 7/32 | 2-9/16 | 3/4 |
| PRO-95030 | 1/4 | 2-5/8 | 13/16 |
| Item | Diameter | Overall length (in) | Flute length (in) |
| PRO-95020 | 10 | 2-5/16 | 5/8 |
| PRO-95010 | 11 | 2-5/16 | 5/8 |
| PRO-95000 | 20 | 2-1/8 | 5/8 |
| PRO-94990 | 30 | 2 | 5/8 |
| Item | Dimensions | Item | Dimensions |
| PRO-20010 | 1/4 – 20A | PRO-44300 | 4 – 40 |
| PRO-20020 | 1/4 – 28A | PRO-44310 | 6 – 32 |
| PRO-20030 | 5/16 – 18A | PRO-44320 | 6 – 40 |
| PRO-20040 | 5/16 – 24A | PRO-44330 | 8 – 32A |
| PRO-20050 | 3/8 -16 | PRO-44340 | 8 – 36A |
| PRO-20060 | 3/8 – 24 | PRO-44350 | 10 – 24A |
| PRO-20100 | 7/16 – 14 | PRO-44360 | 10 – 32A |
| PRO-20110 | 7/16 – 20 | PRO-44370 | 12 – 24A |
| PRO-20120 | 1/2 – 13 | PRO-44380 | 12 – 28A |
| Item | Hole size (in) | Shank size (in) | Range (in) |
| PRO-00700 | 1/8 – 1/2 | 1/4 | 13 |
| PRO-00701 | 3/16 – 1/2 | 1/4 | 6 |
| PRO-00702 | 3/16 – 7/8 | 3/8 | 12 |
| PRO-00703 | 1/4 – 3/4 | 3/8 | 9 |
| PRO-00704 | 9/16 – 1 | 3/8 | 8 |
| Item | QTY per pack | Diameter (in) |
| PRO-00721 | 3 | 1/8 – 1/2, 3/16 – 1/2, 3/16 – 7/8 |
| Item | Diameter (in) | Overall length (in) | Flute length (in) |
| PRO-02750 | 1/64 | 3/4 | 3/16 |
| PRO-02760 | 1/32 | 1-3/8 | 1/2 |
| PRO-02770 | 3/64 | 1-3/4 | 3/4 |
| Item | QTY per pack | Description |
| PRO-57580 | 18 | Tap and Drill Set |
| PRO-88550 | 8 | Left Hand Drill Bolt Extractor Set |
| PRO-58510 | 10 | Left Hand Drill Bolt Extractor Set |
Prohelix highly recommends always lubricating drill bits before use.
Drilling and tapping Wax: PRO-T011
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