1. The screw extractor are made of high hardness CR-MO steel. Spiral flutes are designed to embed themselves deeper into the metal as you turn the tool, so as the fastener resistance increases, the extractor's grip increases.
2. The kit includes 5 sizes from 1#-5/64", 2#-7/64", 3#-5/32", 4#-1/4", 5#-17/64", and 6#-13/32" to ensure that you have the right extractor for every situation. Come with 2 extra sizes 1#-5/64" , 2#-7/64".
3. Our screw extractor set can be used to remove rusty, damaged, or broken bolts, screws, and fasteners of all sizes and types. This makes the set ideal for automotive repair, home improvement, and construction projects.