Chicago-Latrobe 53464 118° cobalt drill bit 1 in reduced shank

1 in Cobalt Drill Bit for 1/2 in Chucks

The Chicago-Latrobe 53464 is a 1 in Silver & Deming drill bit made from machining cobalt with a straw/bronze finish. Its reduced shank fits standard 1/2 in drill chucks, letting heavy-duty portable drills cut large holes without a Morse taper machine. The 118 degree point angle suits general-purpose metal drilling.

Upgrade from Standard High-Speed Steel Bits

Cobalt material resists heat and wear better than ordinary high-speed steel, so the edge stays sharp longer in tough alloys and stainless steel. The jump is worth it when you drill large diameters repeatedly and need the bit to survive the heat that builds up in deep cuts. Standard bits dull faster and can work-harden the workpiece.

Handles Large-Diameter Metal Holes in Portable

This bit comfortably drills 1 in holes in steel, cast iron and similar metals using a handheld or bench drill with a 1/2 in chuck. It runs out when the application demands a larger diameter than 1 in or when a machine taper is required for rigidity in very deep holes. The cobalt substrate extends life but does not eliminate the torque limits of a reduced-shank connection.