Railroad Bits are designed to be used in the boring and bonding of railroad equipment.
RAILROAD BONDING BITS
Railroad Bonding Bits page 122
Bonding Bits are designed for drilling holes for bonding wires in track circuit signal work. Cobalt Bonding Bits are made with a slow helix and a very heavy web for drilling in the head or web of heavy duty rails.
RAILROAD TIE BORING BITS
Railroad Tie Boring Bits - Single Flute page 123
Single Flute Tie Boring Bits are specifically designed for drilling spike holes in railway cross ties. The single flute acts in a screw-like movement, feeding itself into the material while removing maximum chip removal. The open flute design prevents chip packing and reduces wood burning. Single flute drills are also known as Bobbin Bits.

Railroad Tie Boring Bits - Two Flute page 123
Double Flute Tie Boring Bits are specifically designed for drilling holes in railway cross ties. The double flute design combines ease of penetration with rapid chip removal in deep hole, hardwood drilling.

Carbide Tipped Railroad Tie Boring Bits - Two Flute page 177A
Carbide Tipped Tie Boring Bits are designed for drilling all types of wooden railway cross ties and pressure treated lumber. The special fluting design prevents clogging and has a large chip storage area for rapid removal.
RAILROAD TRACK BITS
Railroad Track Bits page 122
The Flat Beaded Track Bit was designed for heavy duty portable track repair work in the field and will fit the various machines in common use. They are available in a single end or a cost saving double end style. Both styles are also available with a super hard nitride coating for increased tool life of 50% to 300% depending upon conditions.

Double End Tracks Bit Tip Protector page 122
Tip protector is inserted into the drill chuck to protect the drill tip from possible damage when drilling with double end style track bit.