Chicago-Latrobe 46492 135 Degree Cobalt Jobber Drill Bit 11 mm

11 mm Cobalt Jobber Drill Bit

This 11 mm cobalt jobber drill bit is built for drilling hard metals such as stainless steel and high-strength alloys. The 135-degree split point reduces walking and starts holes cleanly without a centre punch. It suits maintenance technicians, fabricators and workshop professionals who need reliable performance in tough materials.

Jobber Length for Standard Chucks

The jobber length fits standard drill chucks and allows reach into typical workpiece depths. Cobalt construction resists heat buildup during extended drilling, so the bit stays sharp longer than high-speed steel alternatives. No coolant-through holes are present, so external lubrication or peck drilling is required for deep holes.

Split Point Geometry Improves Accuracy

The split point design centres the bit on contact, reducing the need for pilot holes and saving setup time. Straw bronze surface finish identifies the cobalt grade and provides some corrosion resistance. Decimal equivalent 0.4331 inch helps when matching imperial specifications or selecting tap drill sizes.