DescriptionThis item is a box of broken bolt extractor set made by high-speed steel, with good process details and durable texture, which can serve you for a long time without being easily damaged. The design is reasonable, professional and practical, aiming to provide you with a better experience.Features-Color: Assorted.-Material: High-speed steel. -Size: About 19.50X2.50X1.50cm/ 7.66X0.98X0.59in. - Preferred high-speed steel material, good quality, safe, durable and usable, long serving life. -Exquisite workmanship, durable, can serve you for a long time without causing too much burden. -Drill bits' diameters and recommended extract diameters of broken screws are etched on the case. -Aggressive extractors and drill bits spiral flute design for extra gripping power. -Excellent to remove damaged, rusted or stripped screws, studs, bolts, fasteners, metal water tap and water tube, etc.