Twister Bits™
Trak-Star Twister Bits™ are the standard tooling for drilling all types of rail. They are available in two different styles: Black coated M42 HSS and Carbide Tipped. Twister Black Bits are resharpenable, made in the USA and feature a Titanium Aluminum Nitride coating for extended tool life when cutting rail (up to 400 BHN). Carbide Twister Bits feature brazed in carbide tips and offer up to 2-1/2 times the tool life in both standard and extremely hard rail when used with the RB35.
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The unique annular (hollow) design and thicker cutter wall offers extended tool life and extra durability. Twister Bits feature the quarter --turn style mounting for quick and easy installation with no tools required. When used with a Trak-Star Rail Drill, installation is simple; insert the bit into the arbor, and give it a turn.
Trak-Star Twister Bits™ are the standard tooling for drilling all types of rail. They are available in two different styles: Black coated M42 HSS and Carbide Tipped. Twister Black Bits are resharpenable, made in the USA and feature a Titanium Aluminum Nitride coating for extended tool life when cutting rail (up to 400 BHN). Carbide Twister Bits feature brazed in carbide tips and offer up to 2-1/2 times the tool life in both standard and extremely hard rail when used with the RB35.
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The unique annular (hollow) design and thicker cutter wall offers extended tool life and extra durability. Twister Bits feature the quarter --turn style mounting for quick and easy installation with no tools required. When used with a Trak-Star Rail Drill, installation is simple; insert the bit into the arbor, and give it a turn.
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Twister Bits can also be used with similar rail drilling systems with a 3/4" arbor bore. The shank of the bit features a flat that easily adapts to the set-screw style mounting, offering a secure installation, and allowing Trak-Star cutting technology to be used in multiple systems.
Just insert & twist!
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Fractional Twister Bits
Dia Black Part No. Carbide Part No.
​ Use Pilot 03635 for cutters below
3/4 15324 18-15224
7/8 15328 18-15228
15/16 15330 18-15230
1 15332 18-15232
1-1/16 15334 18-15234
1-1/8 15336 18-15236
1-3/16 15338 18-15238
1-1/4 15340 18-15240
1-5/16 15342 18-15242
1-3/8 15344 18-15244
1-7/16 15346 18-15246
1-1/2 15348 18-15248
1-5/8 15352 18-15252
1-11/16 15354 18-15254
Fractional Twister Bits for Crane
& Girder Rail 2" DOC
Dia TiN Coated Part No.
​ Use Pilot 07496 for cutters below
3/4 15624
7/8 15628
15/16 15630
1 15632
1-1/16 15634
1-1/8 15636
1-3/16 15638
1-1/4 15640
1-5/16 15642
1-3/8 15644
1-7/16 15646
1-1/2 15648
Metric Twister Bits
Dia Black Part No. Carbide Part No. Use Pilot 08632 for cutter below
13 15913* -----
​ Use Pilot 03635 for cutters below
19 ------- 18-15819
22 15922* 18-15822
25 15925 18-15825
​ 28 15928 18-15828
30 15930 18-15830
32 15932 18-15832
36 15936* 18-15836*
* Non-stock standard cutters - 25 pc minimum
Twister Bit Pilots
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03635 For Twister Bits
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07496 For 2" Depth Twister Bits
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08632 For 13mm Twister Bits
Conversion Pilot
For 1-11/16" Cutters for enlarging a hole for the NorFast systems. Part No: 05784
WARNING: This product contains Cobalt, a chemical known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov