◎This series is designed for replacing the damaged oil drain nuts by using a tap to enlarge the stripped the drain plug hole for fitting new nuts with bigger sizes. ◎M20 x1.5P BMW,Chevrolet,Dodge,Honda,Plymouth,Subaru ◎Tap material:SKS3(1 pc) Oil drain plug material:AISI1015 (6pcs) Washer material:Copper (12 pcs)