Cleveland Golf Cobalt Jobber Drill 13/32" 135° Split Point Black Oxide

13/32" Cobalt Jobber Drill

This Cleveland Golf jobber drill is a fractional-inch cutting tool sized at 13/32 inch with a 135-degree split point. It is built from cobalt steel with a black oxide finish for heavy-duty drilling in alloy, carbon, stainless and tool steels. The right-hand spiral flute design supports standard machine or hand-held operations.

Split-point geometry and cobalt construction

The 135-degree split point reduces walking and lowers thrust requirements when starting a hole. Cobalt steel retains hardness at elevated temperatures generated in tough alloys, while the black oxide finish adds lubricity and corrosion resistance. These features combine to extend tool life in demanding materials.

4xD depth capacity in hard steels

The drill handles holes up to four times its diameter in the listed steel families, with a flute length of 3-7/8 inches providing chip clearance at that depth. It is not suited for non-ferrous metals, plastics or composites where different point geometries perform better. Coolant-through capability is not included.