Convert your type 1 irs transmission to strong 930 cv joints using these adapter drive flanges. Made of heavy duty chromoly. Tapped for 3/8 inches fine thread. Sold as a pair. Uses part number 98-5140-b flange plugs Transmission: Type 1 CV Type: 930 Porsche Quantity: 2 PiecesType 1 To 930 Cv Drive Flanges Sold As A Pair