21 Piece Left Hand Jobber - KnKut

The KnKut 21KK6 21 Piece Left Hand Jobber drill bit set is meticulously engineered for professional automotive and industrial applications. This comprehensive collection of left-hand twist drills is specifically designed for tasks such as extracting broken fasteners, rethreading damaged holes, and specialized drilling where reverse rotation is necessary. Constructed from premium-grade Molybdenum high-speed steel with a high vanadium content, these bits deliver reliable performance and extended tool life in demanding environments, effectively drilling tough materials like stainless steel and titanium alloy.

Key Features

• Left-Hand Flute Design: Specifically engineered for reverse rotation applications, these left-hand drill bits are ideal for removing seized screws, studs, and broken bolts without further tightening them. When used with the drill motor in reverse, they can often loosen the broken stud while drilling, eliminating the need for a separate screw extractor.
• Professional-Grade High-Speed Steel: Manufactured from premium Molybdenum high-speed steel, KnKut drills are salt nitride treated, which penetrates the tool's surface to enhance hardness and wear resistance. This ensures superior durability and performance when drilling through various metals, plastics, and woods.
• 21-Piece Comprehensive Set: This set offers a wide range of jobber length fractional sizes, from 1/16" to 3/8" by 64ths, to tackle diverse drilling and extraction requirements, ensuring technicians have the right tool for the job. The 135-degree split point tip allows for fast penetration and prevents walking.
• Robust Storage Case: The set is supplied in a durable, indexed metal storage case for organized bit selection, protection, and easy transport between workstations.

Applications

This KnKut drill bit set is an indispensable tool for professional technicians in automotive repair, industrial maintenance, and machinery fabrication. It excels in tasks requiring the removal of broken fasteners, rethreading existing holes, or drilling in situations where a standard right-hand bit might exacerbate the problem. Common uses include vehicle engine repair, chassis work, industrial equipment maintenance, and general fabrication where precision and specialized drilling are critical for efficiency and preventing further damage.

Specifications

• Manufacturer Part Number: 21KK6
• Number of Bits: 21 pieces
• Weight: 1.75 lbs
• Dimensions: 6.25 x 4.25 x 4 inches