WYBENZ 14-Pc Screw Extractor Set with Left-Hand Drill Bits — HSS Cobalt & Alloy Extractors

WYBENZ 14-piece screw extractor and left-hand drill bit set removes broken, stuck, or stripped screws and bolts quickly and with minimal damage.

This compact kit combines seven HSS cobalt left-hand drill bits and seven alloy-steel extractors in a durable case so you can tackle seized fasteners at home, in the workshop, or on the job site. The tools are engineered to cut into damaged screw heads and grip inward as you reverse the drill, letting you back out stubborn screws and studs without enlarging the hole or harming surrounding material.

How does the left-hand drill bit help remove broken screws?

The left-hand drill bits cut in the reverse direction, which helps the bit bite into the damaged fastener and often causes the screw to spin out as you drill. These bits are cobalt-fortified HSS for greater wear resistance and longer life than plain high-speed steel.

• Includes seven left-hand drill sizes: 1/8", 1/8", 5/32", 5/32", 3/16", 1/4", 19/64" for a broad fit range.
• HRC 63–66 hardness for efficient drilling into common metals (avoid hardened 440 stainless).
• Recommend reverse, low-speed drilling to minimize wandering and reduce risk of breakage.
• Apply coolant on higher speeds and maintain firm control to protect the bit.

What makes the WYBENZ extractors easier to use than standard easy-outs?

WYBENZ extractors feature a 135° cutting geometry that reduces axial resistance and increases cutting length while thinning the cutting layer. That geometry allows the extractor to engage more deeply and grip more effectively without stressing adjacent material.

• Seven alloy-steel extractors sized 1#–5# cover a wide range of fastener diameters.
• Spiral flutes and tapered design bite inward as you rotate counterclockwise for reliable extraction.
• Balanced cutting angle helps reduce slippage and lowers the chance of tool breakage.
• Clear chip evacuation to keep the cutting edge working cleanly and efficiently.

Which materials and jobs are best for this set?

This set performs well on common ferrous and softer non-ferrous materials where fasteners are seized, stripped, or broken. It’s optimized for general workshop, automotive, construction, and home repair applications, not for extremely hardened alloys.

• Ideal for bolts and screws in steel, mild steel, cast iron, aluminum, and wood.
• Not recommended for very hard stainless steels (e.g., 440 series) or heavily case-hardened fasteners.
• Works for removing studs, dowels, rivet-like fasteners, and stripped screws.
• Hand tools or drill motors can be used; low reverse speed advised for best results.

How do I choose the right extractor and use the kit safely?

Select the extractor that best matches the drilled pilot hole and the original fastener size. Start with the smallest drill that creates a centered pilot, then use the matching extractor, turning counterclockwise to remove the fastener. Wear eye protection and use steady, controlled pressure to avoid breakage.

• Drill a centered pilot hole with the left-hand bit slightly smaller than the fastener diameter.
• Insert extractor, tap lightly if needed, then turn counterclockwise with a wrench or drill in reverse at low speed.
• If resistance is extreme, back out, clear chips, and reapply lubricant or coolant before retrying.
• Keep the included storage case to protect bits and prevent loss between jobs.

Who is this for: This WYBENZ 14-piece set is a practical addition for DIYers, mechanics, and tradespeople who routinely face stuck or broken fasteners. If you want a compact, versatile kit that pairs hardened left-hand drill bits with tapered extractors in a protective case, this collection covers most common sizes used in automotive, home improvement, and light industrial tasks.