42CR-MO: All stripped bolt extractors are made of high hardness chrome molybdenum steel with Phosphate blackening surface for superior durability and longer service life.

Complete Size Range: 16-piece 3/8-inch drive lug nut remover tool, Metric & SAE from 1/4" to 3/4"(19mm); 16-piece 1/4-inch drive broken bolt extractor kit, Metric from 6mm to 10mm; with a 1/4" hex adapter, a 3/8" hex adapter and a knockout pin.

Excellent Grip: The twist socket set provides superior grip power to remove old rusted and stripped bolts. Bolt extractor kit can easily pull out bolts, nuts and screws even if they are stripped, rusted or frozen.

Easy to Identify: Each lug nut removal tool features precise laser-etched dimensions for quick and accurate size recognition, helps you quickly select the most suitable bolt extractor.

Safe and Organized: Heavy-duty blow-molded case for organized storage and easy carry. it's ok to take it to anywhere whether it is in your garage or factory. NOTE: Oil on extractor surface prevents rust, not means it's used or dirty.