Twister Rail Drill Bits - 7/8" Cut-off Wheels Our products are designed for

Our products are designed for precision and durability

With this Holder for Carbide Inserts - 1-1/4"

it provides higher strength and higher spike-holding power than fresh hardwood

Two layers of steel wire braids for strength and durability

This smokeless

Twister Rail Drill Bits - 7/8" Cut-off Wheels Our products are designed forDescription 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.