Tools in the Murray Tools Split Die Thread Chaser repair system feature a spring design that allows users to pull the die apart and position on a damaged bolt or stud below the damaged threads. Then using a six-point deep well socket users chase the threads clean, fast and easy, and no cross threading. Dies come in National Coarse, National Fine and Metric sizes. Hex dies are available in the following sizes for servicing bolts and studs: (standard thread repair) 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 7/8", 1" and (metric thread repair): 5mm-0.8, 6mm-1, 8mm-1, 8mm-1.25, 9mm-1, 9mm-1.25, 10mm-1, 10mm-1.25, 10mm-1.5, 11mm-1.5, 12mm-1.25, 12mm-1.5, 12mm-1.75, 14mm-1.25, 14mm-1.5, 16mm-2, 20mm-2.5, 24mm-3.0.
