Description
The KnKut 15pc Left Hand Jobber Drill Bit Set 1/16″-1/2″ by 32nds (15KK6) is a specialized, high-performance tool designed to tackle one of the most frustrating workshop challenges: removing broken studs and fasteners. This comprehensive set provides 15 fractional drill bits, ranging in size from 1/16″ up to 1/2″ by 32nds, giving you a precise option for various tasks. Unlike standard drill bits, these are specifically engineered for left-hand rotation. When operated with your drill motor in reverse, these bits can “bite” into a broken fastener, often causing it to loosen and back out as you drill. This innovative design frequently eliminates the need for additional extraction tools, streamlining your repair process.
KEY FEATURES AND BENEFITS:
- Left-Hand Rotation Design: Specifically engineered to be used in reverse mode with your drill, allowing the bit to potentially loosen and extract broken studs or fasteners as you drill, often eliminating the need for separate extractors.
- Comprehensive Fractional Set: Includes 15 drill bits from 1/16″ to 1/2″ by 32nds, providing a wide range of sizes for various applications.
- Premium Material Composition: Made from high-grade Molybdenum high-speed steel with high vanadium content for superior strength and longevity.
- Advanced Surface Treatment: Salt nitride treated to penetrate the tool’s surface, significantly increasing hardness and making the bits suitable for drilling through tough materials like stainless steel and titanium alloy.
- Self-Centering 135-Degree Split Point: Allows for immediate start on contact without walking, eliminating the need for a center punch or pilot hole and ensuring accurate hole placement.
- Enhanced Lubricity: Gold surface treated body and clearance reduce friction and heat buildup during drilling, leading to smoother operation and extended tool life.
SPECIFICATIONS:
- Set Size Range: 1/16″ through 1/2″ by 32nds
- Included: 15 individual left-hand jobber drill bits
- Material: Molybdenum high-speed steel with high vanadium content
- Surface Treatment: Salt nitride + gold coating on body and clearance
- Point Angle: 135-degree split point
- Manufacturing Origin: United States
HOW TO USE:
- Safety First: Always wear appropriate personal protective equipment, including safety glasses and gloves, before starting any drilling operation.
- Select the Correct Bit: Choose a left-hand drill bit that is smaller than the diameter of the broken stud or fastener you intend to remove.
- Prepare the Drill: Securely chuck the selected left-hand drill bit into your drill motor.
- Engage Reverse Mode: CRUCIALLY, ensure your drill motor is set to operate in REVERSE mode. This is essential for the left-hand drill bit to function correctly in attempting to loosen the broken stud.
- Position and Start: Place the tip of the drill bit firmly against the center of the broken stud. Apply steady, firm pressure before initiating the drill motor.
- Drill and Observe: Begin drilling slowly. As the bit drills into the broken stud, observe if the stud begins to turn counter-clockwise and loosen. If it does, continue drilling slowly until the stud backs out.
- Apply Cutting Fluid (Recommended): For best results when drilling into metal, especially stainless steel or titanium, apply a suitable cutting fluid to the drilling area. This helps cool the bit, reduce friction, and improve cutting efficiency.
- Avoid Enlarging Holes: Do not use these drill bits to enlarge existing holes, as this can damage the bit and reduce its effectiveness.
BENEFITS OF USING KNKUT 15PC LEFT HAND JOBBER DRILL BIT SET 1/16″-1/2″ BY 32NDS (15KK6):
- Time Savings: Can significantly reduce repair time by potentially removing broken fasteners without needing separate, more complex extraction procedures.
- Reduced Frustration: Addresses a common problem (broken fasteners) efficiently, leading to a smoother and less frustrating repair experience.
- Cost-Effectiveness: The durability and efficiency of these bits contribute to a lower cost per hole, providing better value over time.
- Versatile Application: Capable of drilling a wide range of materials, from common metals to hardened alloys like stainless steel and titanium.
- Improved Accuracy: The 135-degree split point ensures precise hole placement and contributes to rounder, more accurate holes.
- Professional Results: Helps achieve clean, precise drilling outcomes, important for professional and demanding applications.
FEATURES:
- 15-piece fractional jobber drill bit set
- Sizes range from 1/16″ to 1/2″ by 32nds
- Engineered for left-hand (counter-clockwise) drilling
- Constructed from high-performance Molybdenum high-speed steel
- Enhanced with vanadium for superior cutting strength
- Salt nitride treated for increased surface hardness
- Gold-coated body and clearance improve lubricity
- 135-degree self-centering point eliminates need for pilot holes
- Effective on stainless steel and titanium alloys
- Precision-manufactured in the USA
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