Triumph Twist Drill 099809 Drill Bit Set 15 Pc Hss

Product Description

The TRIUMPH TWIST DRILL 099809 is a 15-piece jobber length drill bit set designed for metalworking and general multipurpose drilling applications. Built from high-speed steel (HSS) with an oxide finish, the bits feature a 135-degree split point that reduces walking and allows drilling to start without a center punch. The straight shank design fits standard 3-jaw chucks. Bit sizes range from 1/16 inch to 1/2 inch in 1/32-inch step increments, covering the most common hole sizes encountered in trade and fabrication work. The set ships in a metal storage case. Weight is 2.1 pounds.

This set is intended for metalworking trades and multipurpose drilling in ferrous and non-ferrous materials. Electricians, HVAC technicians, plumbers, and fabricators commonly reach for a jobber length set when drilling sheet metal, structural steel, aluminum, and similar substrates. The 4.125-inch overall length keeps the bits maneuverable in tight installations. The 15-piece coverage from 1/16 inch through 1/2 inch handles conduit knockouts, mounting holes, and anchor pilot holes without needing a second set.

Key Features

• 135-degree split point reduces bit walking and eliminates the need for a center punch on most materials
• High-speed steel construction with oxide finish for durability in heavy-duty drilling applications
• 15 bits covering 1/16 inch to 1/2 inch in 1/32-inch increments
• Straight shank fits standard 3-jaw drill chucks
• Jobber length (4.125 inches overall) suits most hand drills and drill presses
• Metal storage case keeps bits organized and protected on the job

Compatibility

Designed for use in any standard 3-jaw chuck capable of accepting a straight shank bit up to 1/2 inch. Suitable for metalworking and multipurpose drilling across trade applications including electrical, HVAC, plumbing, and general fabrication.

Installation Notes

Use in a drill press or hand drill with a properly tightened 3-jaw chuck. Secure the workpiece before drilling to prevent rotation. Apply cutting fluid when drilling through hardened or thick ferrous stock to extend bit life. Inspect bits for wear or chipping before each use; a damaged split point will cause off-center starts and reduced hole quality.