Innovative screw design ensures that damaged, rusty and stubborn nuts, bolts or screws are firmly grasped and easily pulled out. Just choose the appropriate sleeve size, fix it on the damaged nut with a hammer, then connect any 1/2 inch drive impact wrench, electric or pneumatic tool to the socket, and then turn it counterclockwise to loosen the nut. Made of chrome vanadium steel, the nut remover socket has excellent wear resistance, toughness and corrosion resistance, and the black oxide coating ensures durability. The socket and the central punching rod are neatly placed in a convenient suitcase, which is convenient for storing and transporting suits, and it is easy to go wherever you go. You will receive a set of broken nut extractor set, which can meet your daily use needs. Name: Broken nut extractor set Specification of sleeve: 17/19/21/23/27(mm) Quantity: 6pcs/set packing list: 1* Center Punching Rod 5* sleeve Colour:black+silver Material:Metal Package Contents: 1 x Broken nut extractor set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.