Chicago-Latrobe 46488 10 mm 135° Cobalt Jobber Drill Bit

10 mm Cobalt Jobber Drill Bit

The Chicago-Latrobe 46488 is a 10 mm cobalt jobber drill bit designed for heavy-duty metal drilling. Its 135-degree split point reduces walking and starts on contact. The straw-bronze finish identifies the cobalt alloy construction. This accessory fits standard drill chucks for professional and workshop use.

Check shank fit and material suitability

Verify that your drill chuck accepts a 10 mm straight shank before ordering. The split point geometry is optimised for hard metals such as stainless steel and high-strength alloys. The bit has no coolant holes, so external lubrication or peck drilling is required for deep holes. Ensure your application does not require through-coolant capability.

Suited for metalworkers without through-coolant

This bit suits machinists and fabricators drilling 10 mm holes in tough materials where a split point improves accuracy. It is not for operators who require internal coolant delivery for high-volume production. Buyers needing larger diameters or different point angles should look at other options. Users without a compatible chuck capacity cannot use this bit.