Removes Damaged Thread and Taps a New Oversize Thread. This set includes a piloted drill, spring-loaded tapping tool and 5 magnetic drain plugs. The unique tapping tool ensures the new thread will be perpendicular to the gasket surface to prevent leakage. Works on soft steel and aluminum oil pans with 1/2\", 12mm & 14mm threads. Can be used on the vehicle when room permits. 58650 Plugs & Gaskets (Set of 5) (also called plugs) 58880 Piloted Drill Assembly 58900 Tap *Plugs are 5/8 x 18 *.615 DRAIN PLUG (OVERSIZED) 03/08/13- 5/8\" 18 Thread Pitch 59930.70- Case only