Strip the end of your spark plug wire. Attach the rajah terminal to the wire. Slide this wire terminal on the top of your spark plug. Secure attachment by screwing in the brass nut.
Will work with any any modern spark plug with a removable top nut. The list includes NGK, Champion, and any other major brands.
Each order includes 2 brass nuts and two Rajah ring terminals. $8.00 at Lowbrow Customs