Item No.: H45B680
·For the spark plug threading repair.
·Set include:   
·1pc M14 & M16x1.25 step tap 
·1Pc Insert installnation tool
·5Pcs x stainless Inserts 8.40mm long
·5Pcs x stainless Inserts 12.40mm long
·5Pcs x stainless Inserts 16.40mm long"