BCombination Thread Repair Set - External 4-38mm 532-1-12 In, Internal 8-32mm ReviewbP PP Combination Thread Repair Set - External 4-38mm 532-1-12 In, Internal 8-32mm P•External diameter range: between 532"- 112" 4 mm - 38 mmP•Internal diameter range: between 516"- 114" 8 mm - 32 mmP