Clutch plain steel driven plates, Made in Italy by Surflex. Suit Norton clutches pre AMC gearbox. 1934?- 1955/56. Suits clutch centre with groove for clutch plate retaining ring. Nortons had 5 friction plates and 6 steel plates. Tangs go in. Tangs have proven to be a fraction long on soem clutches - I had to take off less than 1mm on each tang to get them to fitt nicely - 4 light strokes of a file is plenty. Original Part No: 3345; A2/392 Clutch plate (steel)