Clutch plain steel driving plates, Made in Italy by Surflex. Suit Norton, AJS, Matchless, AMC clutches 1962?+. This plate has the tangs on the outside. Most models had 4 steel plates, 650's and bigger had 5 plates. 8 tags; tag width 15mm; major diam: 6-1/8" 155mm; ID 3.8" 96.5mm; thickness 5/64" 2mm Original Part No: 21480; 04-3191 - Clutch plate (plain)