US PRO 10PC Cobalt Left Hand Drill Bit & Screw Extractor Set - M35

This set is ideal for use on a variety of materials including stainless steel, high-tensile steel, and alloyed metals.

The drill bits are compatible with standard drills.

Match the drill bit size to the diameter of the broken fastener. Use the extractors that are matched in size to the drill bits.

Clean them after each use. Store them in the provided case and apply cutting fluid during use to extend their lifespan.

The 135° split point allows for accurate self-centering starts, which helps to prevent the drill bit from 'walking' or wandering off the mark.

Left-hand drill bits rotate counter-clockwise, which is helpful for removing broken screws and bolts as they tend to unscrew as the bit turns.

M35 high-speed steel with 5% cobalt is a high-performance material that provides excellent durability, wear resistance, and the ability to maintain hardness at high temperatures, which is especially important when cutting hard materials.

If the extractor doesn't work, try using penetrating oil, ensuring the correct size extractor is used, or, in severe cases, consult a professional.

Reduce speed, apply more pressure, and ensure correct alignment.

Check the sharpness of the bit and replace if necessary. Ensure you are using the correct speed and applying cutting fluid.

Ensure the extractor is the correct size for the fastener. Try using a larger extractor, or applying penetrating oil.