Tvardy broken bolt extractor set 15 pcs Cr-Mo, for removed or seized screws

Tvardy broken bolt extractor set 15 pcs Cr-Mo is a compact toolkit designed to remove sheared, stripped or seized screws and bolts. Manufactured from chromium-molybdenum (Cr-Mo) steel, the set provides durable extractor bits that bite into damaged fasteners to enable controlled removal without enlarging or further damaging the assembly. The kit includes a selection of extractor sizes to cover common repair tasks in automotive, machinery and general maintenance environments, and is supplied in a compact case for storage and transport.

Advantages

The Cr-Mo construction offers high tensile strength and wear resistance, enabling repeated use in demanding conditions. A range of extractor diameters allows for secure engagement with various bolt and screw sizes, reducing the need for improvised methods. The compact case keeps components organized and accessible, while hardened tips ensure reliable grip on rounded or corroded fasteners. The set is intended for practical, workshop-level extraction tasks and emergency repairs.

Suitable for

• Automotive repairs: removing sheared wheel bolts, seized engine or body fasteners
• Machinery maintenance: extracting broken bolts from housings and brackets
• General workshop use: restoring stripped screws in metal and some hard plastics
• Emergency field repairs where controlled fastener removal is required

Key specifications

• Material: chromium-molybdenum (Cr-Mo) steel
• Tool count: 15 extractor pieces covering a range of diameters
• Finish: hardened and heat-treated working ends for improved wear resistance
• Storage: compact carrying case for organized storage and transport
• Compatibility: suitable for common metric and imperial damaged fasteners within the included size range

How to use

Select an extractor size that most closely matches the damaged fastener. Secure the workpiece where possible, drill a pilot hole in the center of the broken bolt if required, then insert the extractor and turn counterclockwise using an appropriate wrench or tap handle. Apply steady, controlled torque to avoid further rounding; heat or penetrating lubricant can be used to ease removal of corroded fasteners. After extraction, inspect threads and repair or replace as needed.

Usage recommendations

Use eye protection and follow standard safety precautions while drilling and applying torque. For hardened or highly corroded fasteners, consider progressive extraction steps: start with smaller torque and increase gradually, and use penetrating oil or heat where appropriate. If extraction fails or risk of damage to surrounding components is high, consult a professional technician.