The Irwin Hanson 30520 Left Hand Cobalt Drill Bit Set is a 5-piece screw extractor set designed for automotive use. Made in the United States by Irwin/Hansen, these high-quality drill bits are specifically crafted for left-handed users, featuring a durable cobalt construction for optimal performance. Perfect for removing stubborn screws and bolts with ease, this set is a must-have for any mechanic or DIY enthusiast tackling automotive maintenance and repair tasks.