ADD-ON KITS ONLY PROVIDE THE NECESSARY TOOLING TO CONVERT TO BIG-SERT You must have the original 7111 kit. What is Included: Drill, Tap, Bushing, line pin, Inserts and dowels. Second repair after a failed coil style insert. Kit includes 10 inserts of  the M11x1.5x30mm P/n J-42385-507BS  and 2 head alignment dowels of the P/n 31304