Durable Material: The bolt remover is made of alloy steel, safe and reliable, sturdy and lightweight, wear-resistant, and it is not easy to break and fade. Remove Damaged Bolts: Deal with frozen, broken, loose and damaged screws and bolts with this bolt remover and extractor set. These extractors will help you remove the toughest broken fasteners effectively. High Grip: Strong multi-plane teeth with a left-hand helix design for extra grip and faster threading. The spiral grooves insert into themselves to increase grip and reduce drag. Easy to Carry: With lightweight design, the screw remover is portable to move. plus, the lightweight won't add extra burden for you to put it in your bag. Heavy Duty Use: Always use an easy-to-remove bolt extractor set when dealing with broken or frozen screws. The kit includes extractors ranging from 1/8" to 7/8" and each piece is etched for easy identification.