KnKut 29pc Left Hand Jobber Drill Bit Set 1/16″-1/2″ by 64ths (29KK6)

Description

The KnKut 29pc Left Hand Jobber Drill Bit Set 1/16″-1/2″ by 64ths (29KK6) is a specialized tool engineered to address the common challenge of removing broken studs, bolts, and screws. This comprehensive set of 29 precision-ground drill bits ranges in size from 1/16″ to 1/2″ in 64th-inch increments, providing a full range of options for various tasks. Each bit is designed to operate in reverse, a crucial feature that allows the counter-clockwise rotation to grip and often loosen a broken fastener as you drill, frequently eliminating the need for separate extraction tools.

KEY FEATURES AND BENEFITS:

• Left-Handed Design for Extraction: Specifically engineered to be used with a drill motor in reverse mode, the counter-clockwise rotation can engage and loosen broken studs or fasteners as you drill, often removing them without needing an additional screw extractor.
• Wide Size Range: Includes 29 drill bits from 1/16″ to 1/2″ in precise 64th-inch increments, offering versatility for a broad spectrum of drilling and extraction needs.
• Premium Material Composition: Made from high-grade Molybdenum high-speed steel with high vanadium content, providing excellent durability and performance in demanding applications.
• Enhanced Surface Hardness: Salt nitride treated to penetrate the tool’s surface, increasing hardness and allowing for efficient drilling through tough materials like stainless steel and titanium alloy.
• Self-Centering 135° Split Point: The unique point design enables bits to start on contact without walking, eliminating the need for a center punch or pilot hole and ensuring the creation of rounder, more accurate holes.
• Reduced Friction and Heat: Gold surface treatment on the body and clearance maximizes lubricity, which helps to minimize friction and heat buildup during drilling, extending bit life.

SPECIFICATIONS:

• Drill Bit Sizes: 1/16″ through 1/2″ by 64ths
• Number of Pieces: 29
• Material: Molybdenum High Speed Steel (HSS) with high vanadium content
• Point Angle: 135 degrees
• Point Type: Split Point
• Surface Treatment: Salt Nitride Treated, Gold Surface Treated
• Length Type: Jobber Length
• Manufacturing Origin: Made in USA
• Included in Set: 29 individual left-hand jobber length drill bits in a storage case/index.

HOW TO USE:

1. Prepare Your Workpiece: Securely clamp the material you are working on to prevent movement during drilling. If dealing with a broken fastener, ensure the surface around it is clear.
2. Select the Correct Bit Size: Choose a left-hand drill bit that is slightly smaller than the diameter of the broken stud or fastener you intend to extract. This allows for proper engagement without damaging the surrounding material.
3. Insert Bit into Drill: Place the selected drill bit firmly into your drill chuck.
4. Set Drill to Reverse Mode: Crucially, ensure your drill motor is set to operate in REVERSE (counter-clockwise) mode. These bits are specifically designed for this rotation.
5. Position the Bit: Carefully align the tip of the drill bit with the center of the broken stud or the area where you need to drill. The 135° split point will help prevent the bit from walking.
6. Begin Drilling: Apply steady, moderate pressure and begin drilling. As the left-hand bit rotates counter-clockwise, it may catch the broken stud and, as it cuts, simultaneously attempt to unscrew it.
7. Monitor Progress: Continue drilling until a sufficient hole is created or, ideally, until the broken stud begins to loosen and back out. If the stud loosens, you can often remove it by continuing to drill in reverse or by using pliers if it becomes accessible.
8. Clean Up: After drilling, clear away any chips or debris.

BENEFITS OF USING KNKUT 29PC LEFT HAND JOBBER DRILL BIT SET 1/16″-1/2″ BY 64THS (29KK6):

• Streamlines the process of removing broken bolts and screws, often eliminating the need for separate screw extractors.
• Provides a full range of fractional sizes, ensuring the right bit is available for various tasks.
• Reduces operational costs over time due to the bits’ extended lifespan and efficient performance.
• Offers reliable performance in challenging applications involving hard metals.
• Contributes to cleaner, more precise drilling outcomes without the hassle of pilot holes.
• Saves time and effort in repair and maintenance tasks by simplifying broken fastener removal.

FEATURES:

• Operates in reverse drill motor mode
• Covers sizes 1/16″ up to 1/2″ in 64th increments
• Made from Molybdenum HSS with vanadium
• Salt nitride surface treatment for hardness
• Gold surface treated for reduced friction
• 135-degree split point tip for accurate starts
• Designed to drill challenging materials like stainless steel
• Manufactured in the United States
• Creates rounder holes without pre-drilling
• Engineered for maximum tool life and low cost per hole