The 1/4-20 Thread Repair Kit HSS Drill Helicoil Insert Repair Tool Set is a high-quality set designed for automotive use. Made with SAE measurements, this kit includes a helicoil insert repair tool for repairing damaged threads. The package dimensions are 6.97x5.24x1.65 inches, and the set includes 1 piece. This tool set is a valuable addition to any mechanic's toolkit for efficiently repairing threads and ensuring a secure fit.