KnKut 5-Pc Carbide Tipped Hard Steel Left Hand Drill Bit Set (5KK9-LH)

The KnKut 5-Pc Carbide Tipped Hard Steel Left Hand Drill Bit Set (5KK9-LH) is a specialized tool engineered for precision drilling in the most challenging materials. Crafted in the USA, this set offers a reliable solution for situations requiring exceptional material penetration and the removal of broken components. Each bit is carbide-tipped and designed for use in hardened steel ranging from 48 to 65 Rockwell "C."

KEY FEATURES AND BENEFITS:

• Exceptional Hard Material Drilling: Specifically designed to drill into hardened steel from 48 to 65 Rockwell "C" without annealing the material, preserving its integrity.
• Broken Tap and Fastener Extraction: The left-hand (counter-clockwise) rotation is ideal for drilling into broken taps, studs, and other fasteners, often assisting in their removal.
• Precision Performance: Allows for the creation of clean holes in extremely tough and exotic metals, ensuring reliable results in critical applications.
• Versatile Application: Suitable for a range of tasks including drilling broken studs, removing spring bolts, working with die sections, and addressing broken easy-outs.
• Optimized for Tough Jobs: Engineered to perform under heavy pressure and low RPMs, ensuring effective cutting and extending bit life in demanding environments.

SPECIFICATIONS:

• Manufacturer: KnKut (Made in USA)
• Model Number: 5KK9-LH
• Material: Carbide Tipped Hard Steel
• Drill Bit Type: Left Hand Jobber Length
• Includes: 1 piece each of the following sizes:
• 1/8"
• 3/16"
• 1/4"
• 5/16" x 4"
• 3/8" x 4"

HOW TO USE:

1. Select the Correct Bit: Choose the appropriate drill bit size for the broken fastener or the hole you intend to drill.
2. Set Drill to Reverse: Crucially, set your drill motor to reverse mode. These are left-hand bits and will only cut effectively when spinning counter-clockwise.
3. Apply Cutting Oil: Before drilling, liberally apply cutting oil to the drill bit and the workpiece. This lubricates the cutting action, dissipates heat, and extends the life of the bit.
4. Use Heavy Pressure: Apply significant, consistent pressure to the drill bit. Unlike standard drilling, these bits require substantial force to penetrate hardened materials.
5. Maintain Low RPMs: Operate your drill at a low revolutions per minute (RPM) setting. High speeds will generate excessive heat and can damage the carbide tip.
6. Drill and Observe: Begin drilling slowly. When addressing broken taps, the counter-clockwise rotation may help to back out the tap as you drill deeper. Continue drilling until the broken component is loosened or the required hole depth is achieved.
7. Preferred Tool: While usable in portable drills, drill presses are highly recommended for optimal stability, consistent pressure, and precision.

BENEFITS OF USING KNKUT 5-PC CARBIDE TIPPED HARD STEEL LEFT HAND DRILL BIT SET (5KK9-LH):

• Avoids the time-consuming process of annealing hardened materials before drilling.
• Offers a specialized solution for efficiently removing stubborn broken fasteners, reducing repair time and effort.
• Provides reliable performance in situations where standard drill bits would fail or quickly wear out.
• Contributes to cleaner, more precise holes even in the most demanding metalworking tasks.
• Reduces the need for additional tools or complex procedures when dealing with broken components.

FEATURES:

• Carbide-tipped cutting edges for superior material penetration.
• Left-hand helical flute design for counter-clockwise rotation.
• Constructed for drilling materials with 48 to 65 Rockwell "C" hardness.
• Designed to drill without altering the material's structural integrity.
• Specifically engineered to assist in backing out broken taps during drilling.
• Optimized for use with heavy pressure and low rotational speeds.
• Requires the application of cutting oil for effective operation.
• Suitable for both stationary drill presses and handheld portable drills.
• Comprises a 5-piece set covering essential drilling diameters.
• Manufactured in the USA, indicating adherence to quality standards.