Cleveland Golf #17 Parabolic Jobber Drill Cobalt 135°

Cleveland Golf #17 Cobalt Drill

This Cleveland Golf #17 jobber drill is made from cobalt steel with a 135-degree parabolic flute and notched point. It targets machinists and maintenance technicians who need a single high-performance bit for drilling tough alloys. The straw finish and TiAlN coating resist oxidation during high-temperature cutting. One piece is supplied under list number 2075.

Sustained drilling in hard materials

The parabolic flute form and wider flute spacing improve coolant flow and chip evacuation during extended cuts in chilled cast iron, high-speed steel, high-strength alloy steel, stainless steel and tool steels. The modified notch point increases stability and reduces work hardening so the bit stays accurate through deep holes. TiAlN coating further extends life where heat builds up over long cycles.

Replaces standard high-speed steel bits

This drill upgrades from conventional HSS jobbers when hole tolerance, chip control and tool life in difficult steels become critical. The jump is worth it for repeated operations in the listed alloys where ordinary bits dull or pack chips quickly. Buyers who need a full set of sizes or a different point geometry for softer materials should look elsewhere.