Premium Left-Hand HSS Jobber Drill Bit Set 15pc

A left-hand drill bit set belongs in every professional shop, maintenance truck, and fabrication facility. This 15-piece Left-Hand HSS Drill Bit Set covers the most commonly used fractional sizes from 1/16″ through 1/2″ by 1/32″ increments, giving you the range needed to drill accurately and remove broken or seized fasteners without immediately reaching for an extractor.

Each drill bit is ground from high-speed steel (HSS) and features a left-hand spiral flute, designed to run in reverse. When drilling into stuck bolts, broken studs, or seized fasteners, the reverse cutting action often allows the bit to grab and back the fastener out during drilling, saving time and preventing extractor breakage. When removal does not occur automatically, the drilled hole is already perfectly sized for extractor use.

The black and gold oxide finish improves chip flow, reduces heat buildup, and increases tool life during repeated use in steel, iron, aluminum, and non-ferrous metals. These left-hand drill bits are precision ground for clean starts, consistent cutting, and controlled chip evacuation in both handheld drills and drill presses.

Housed in a durable indexed metal case, this 15-piece set keeps sizes clearly organized and protected in shop or field environments. Designed for mechanics, machinists, maintenance crews, fabricators, welders, and contractors who require reliable performance when fasteners fail.

Key Features

• Left-Hand Spiral Design – Drills in reverse to help loosen and back out stuck fasteners

• High-Speed Steel (HSS) – Durable cutting edges for metalworking and general shop use

• Black & Gold Oxide Finish – Improves heat resistance and chip evacuation

• Fractional Sizes by 32nds – Covers 1/16″ through 1/2″

Applications

• Removing broken bolts and snapped fasteners

• Drilling seized studs prior to extractor use

• Automotive repair and maintenance

• Fabrication and welding shops

• Industrial maintenance and equipment repair

Specifications

• Set Size: 15 Pieces

• Size Range: 1/16″ – 1/2″

• Increments: 1/32″

• Material: High-Speed Steel (HSS)

• Finish: Black & Gold Oxide

• Rotation: Left-Hand (Reverse)

• Case: Metal Index

Questions? Call 800-350-8665 — real people, real tooling knowledge.