Can you believe what he wrote?? metric and Sae threads interchangable?? 10 bucks for a helicoil kit??? Don't go anywhere but NAPA?? You must go to a speciallty shop and I still haven't found one that carries a 1/4-32 helicoil kit let alone a tap and DIE (Dye?) for one. The only place I have found that size tap was from harry Higley.