KnKut 10pc Left Hand Screw Drill & Square Extractor Set (10KK7-LHSQX)

The KnKut 10pc Left Hand Screw Drill & Square Extractor Set (10KK7-LHSQX) is a specialized, USA-made tool designed for the precise and efficient removal of broken studs and bolts, particularly in confined or hard-to-reach areas. This comprehensive 10-piece set combines the innovative action of left-hand screw machine (stubby length) drill bits with the careful non-expanding design of square extractors. The left-hand drill bits are engineered to effectively grip and often remove the broken fastener themselves when used in reverse mode on a drill motor. This unique capability can frequently eliminate the need for further extraction steps. Should the drilling process not fully remove the fastener, the included square-style screw extractors are then employed. Unlike some other extractor types, these square extractors are specifically designed not to chew up or expand the object being removed, preserving the integrity of the surrounding material and simplifying the removal process. This set provides a professional solution for common repair challenges, ensuring clean and effective fastener retrieval without causing additional damage to the workpiece.

KEY FEATURES AND BENEFITS:

• Efficient Fastener Removal: Left-hand screw machine (stubby) length drill bits are designed to often remove the broken stud or bolt during the drilling process itself when used in reverse, saving time and effort.
• Non-Damaging Extraction: Square-style screw extractors are engineered to grip the fastener securely without expanding or chewing up the material, protecting the surrounding threads and workpiece.
• Precision Drilling: The 135° split point on the drill bits ensures self-centering and reduces bit "walking," allowing for accurate hole initiation without the need for a pilot hole.
• Secure Grip: Three flats on the shanks of the drill bits provide a superior grip in drill chucks, preventing slippage during operation and enhancing safety.
• USA Made Quality: Manufactured in the USA, ensuring adherence to high standards of material quality and precision engineering for reliable performance.
• Optimized for Tight Spaces: The "stubby" length of the drill bits offers increased rigidity and reduced deflection, making them ideal for use in compact or restricted working environments.

SPECIFICATIONS:

• Included in the set:
• 5 x Left Hand Screw Machine (Stubby) Drill Bits: 1/8", 3/16", 1/4", 5/16", 3/8"
• 5 x Square Extractors: SQE1, SQE2, SQE3, SQE4, SQE5

HOW TO USE:

1. Prepare the Work Area: Ensure the area around the broken stud or bolt is clean and accessible.
2. Select the Right Drill Bit: Choose a left-hand drill bit that is slightly smaller than the diameter of the broken fastener.
3. Set Drill to Reverse: Important: Ensure your drill motor is set to reverse (counter-clockwise) rotation.
4. Drill the Pilot Hole: Position the drill bit centrally on the broken fastener and begin drilling. Apply steady, moderate pressure. The left-hand rotation may cause the fastener to loosen and back out as you drill.
5. Achieve Minimum Depth: Continue drilling until you have created a hole with a minimum depth of 1/2 inch into the broken fastener.
6. Insert Extractor (if needed): If the fastener does not come out during drilling, select the appropriate size square extractor that fits snugly into the drilled hole.
7. Turn the Extractor: Insert the extractor into the hole. Use a tap wrench or an appropriate tool to slowly turn the extractor counter-clockwise. The square shape will bite into the material, gripping the fastener and backing it out.
8. Remove the Fastener: Continue turning until the broken stud or bolt is fully extracted.

BENEFITS OF USING KNKUT 10PC LEFT HAND SCREW DRILL & SQUARE EXTRACTOR SET (10KK7-LHSQX):

• Minimizes the risk of further damage compared to conventional extraction tools.
• Left-hand drill bits can often remove fasteners without needing the extractor.
• Square extractors do not expand the broken fastener, preserving surrounding threads.
• Stubby drill bits enhance control and reduce breakage risk.
• Provides a precise, reliable, and less destructive solution for broken hardware.
• Improves repair efficiency by streamlining the extraction process.

FEATURES:

• Left-hand screw machine (stubby) length drill bits for rigid operation.
• Square-style extractors designed for non-expanding grip.
• Drill bits include a 135-degree split point for accurate starts.
• Shanks of drill bits have three flats to prevent slippage in chucks.
• Contents include specific sizes: 1/8", 3/16", 1/4", 5/16", 3/8" drill bits.
• Set includes SQE1, SQE2, SQE3, SQE4, SQE5 square extractors.
• Tools are manufactured in the United States.