Twister Rail Drill Bits - 7/8" Drill Bits & Sockets Tools and is easy to replace

and is easy to replace when it wears down

Nitrocarburization surface treatment for corrosion protection

The bright yellow color maximizes awareness to operators

heavy-duty steel head

1-3/4" tapered broach and 8-point deep length impact socket with 1" square drive

Twister Rail Drill Bits - 7/8" Drill Bits & Sockets Tools and is easy to replaceDescription 7 8" titanium aluminum nitrate coated Twister annular (hollow) drill bits by Trak Star. Hi speed, premium steel. According to AAR field testing, they keep rail temperatures around the hole 35 degrees Fahrenheit above outside temperatures, eliminating thermally activated embrittlement and stress cracks.