Package Contents

This 14-piece all-in-one kit contains 5 spiral screw extractors in size #1 to #5, 5 matching left-hand cobalt drill bits (specifications: 1/8", 5/32", 3/16", 1/4", 19/64"), plus duplicated small-size tools for frequent daily tasks. All accessories are stored in a rugged dedicated plastic storage case for neat classification and convenient carrying.

Durable Material

The spiral screw extractors adopt premium 35# Cr-Mo steel with professional heat treatment process, delivering outstanding torsion resistance and structural sturdiness to avoid twisting and breaking during extraction work. The left-hand drill bits are forged from 6542 HSS high-speed steel, featuring excellent hardness and heat resistance, retaining sharp cutting performance when drilling regular carbon steel bolts. You only need to lower drilling speed when tackling heavily rusted or HRC40+ hardened screws to reduce tool wear.

Product Details

Extractors are engineered with reverse spiral grooves, which can bite tightly into damaged screw surfaces to maximize gripping force and prevent slipping; drill bits apply a 135° tip design, cutting into metal faster and stably for neat pilot holes. The standardized dimension series covers multiple common fastener sizes. Small-sized extractors suit manual wrench operation better, impact tools are not recommended for tiny models to prevent breakage; pick the largest adaptable extractor and apply gentle torque for optimal removal effect.

Suitable For

It is perfectly applicable to take out broken, thread-stripped, lightly jammed and rusted bolts/screws, fits standard carbon steel fasteners for daily repair scenarios. Note that for severely rusted, tightly seized or oversized bolts, the extraction success rate will drop accordingly.

Widely Used

Practical for automotive maintenance, household DIY renovation, furniture assembly repair and general mechanical upkeep jobs. The compact portable case supports on-site outdoor construction, garage workshop work and home emergency repairs, meeting diversified professional and personal maintenance demands.