The KnKut 13-pc Left Hand Jobber Length Drill Bit Set 1/16"-1/4" (13KK6) is a specialized tool designed for precision and effectiveness in challenging drilling applications. Manufactured in the USA from premium grade Molybdenum High Speed Steel (HSS) with high vanadium content, these drill bits are built to perform. Each bit undergoes a unique salt nitride treatment, which penetrates the tool's surface, significantly enhancing its hardness and allowing it to drill through tough materials like stainless steel and titanium alloy with ease. The 135-degree split point tip is a standout feature, as it eliminates the need for a center punch or pilot hole, allowing for faster and more accurate drilling. This set is particularly valuable for its left-hand rotation, making it an ideal choice for the common problem of removing broken studs. When operated in reverse, these bits can often loosen a broken stud while drilling, potentially eliminating the need for a separate screw extractor and saving valuable time and effort. KEY FEATURES AND BENEFITS: Optimized for Broken Stud Removal: Left-hand rotation is specifically designed to help loosen broken studs or fasteners while drilling, often preventing the need for additional extraction tools. Superior Material & Treatment: Made from high-grade Molybdenum High Speed Steel with high vanadium content and salt nitride treated, ensuring exceptional hardness and extended tool life when drilling tough materials. Precision Drilling: The 135-degree split point tip allows for immediate drilling without the need for a center punch or pilot hole, producing rounder and more accurate holes efficiently. Versatile Material Compatibility: Engineered to drill through demanding materials such as stainless steel and titanium alloy, providing reliable performance where standard bits may fail. Cost-Effective Performance: Designed to offer the lowest cost per hole, reflecting their efficiency, durability, and reduced need for replacement. Proudly Made in USA: Manufactured in the United States, ensuring high-quality standards and consistent performance. SPECIFICATIONS: Drill Bit Sizes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4" Material: Molybdenum High Speed Steel (HSS) with high vanadium content Tip Angle: 135-degree split point Treatment: Salt nitride treated Orientation: Left Hand Rotation Length Type: Jobber Length Included: 13 drill bits and a metal index case HOW TO USE: Select the Correct Bit: Choose the appropriate size left-hand drill bit for the broken stud or the hole you need to drill. For broken studs, select a bit slightly smaller than the stud's diameter. Prepare Your Drill: Insert the selected left-hand drill bit securely into your drill chuck. Set Drill to Reverse: Crucially, ensure your drill motor is set to reverse mode (counter-clockwise rotation). This is essential for the left-hand bits to function correctly and potentially loosen a broken stud. Position the Bit: For broken studs, carefully position the drill bit in the center of the broken fastener. For general drilling, place the tip where you intend to create the hole. The 135-degree split point tip should prevent walking. Begin Drilling: Apply steady, even pressure and begin drilling. Allow the bit to do the work; do not force it. Monitor for Stud Removal (if applicable): While drilling a broken stud, observe if the stud begins to turn and loosen. If it does, continue drilling until it completely backs out. Clear Debris: Periodically clear chips and debris from the hole to prevent clogging and overheating. Complete the Hole: Continue drilling until the desired depth is achieved or the broken stud is removed. Clean and Store: After use, clean the drill bit and return it to its metal index case for proper storage. BENEFITS OF USING KNKUT 13-PC LEFT HAND JOBBER LENGTH DRILL BIT SET 1/16"-1/4" (13KK6): Saves time and effort by potentially eliminating the need for specialized screw extractors when dealing with broken fasteners. Reduces the overall cost of repairs due to efficient drilling and the bits' extended lifespan in challenging applications. Minimizes material damage, as accurate holes are drilled without the need for additional pilot holes or excessive force. Enhances safety by providing precise control and reducing the likelihood of bit walking or slipping during operation. Provides a reliable solution for maintenance and repair tasks involving hardened or seized components. FEATURES: Fractional drill bit sizes included: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4". Specifically designed for counter-clockwise rotation to aid in extracting broken screws and studs. Constructed from high-grade Molybdenum HSS with enhanced vanadium content for superior wear resistance. Features a surface-penetrating salt nitride treatment that significantly increases the cutting edge hardness. Equipped with a 135-degree split point geometry for self-centering, preventing bit walk on curved or angled surfaces. Eliminates the necessity for pre-drilling pilot holes, streamlining the drilling process. Engineered to consistently produce perfectly round and clean holes. Optimized to deliver a low operational cost per hole, reflecting long-term value. Packaged in a durable metal case for organized storage and easy transport. Guarantees consistent quality and performance, being entirely manufactured in the USA.