Lineman's Fiberglass Drill Bits are engineered to deliver linemen cleaner, straight through holes in composite and fiberglass utility poles and crossarms. The bit features a carbide tip for a faster, cleaner cut and best life. These bits are available in 12 and 22 lengths to pass through power utility poles and arms in a single pass. This eliminates the need to flip over the pole, line up holes, and drill through the other side. The 7/16” hex shank allows for a quick connection. Pair this accessory with the Hex Utility High Torque Impact Wrench (2865-20) for ultimate performance.