Clutch spring stud, each, stainless steel. Suits Norton and AMC, AJS, Matchless clutches 1957 to 1962? on to pre Commando. Can be fitted to early Norton clutches pre 1957. These are an improved design compared to the early hollow posts as heavy handed owners are less likely to shear off the stud screw. Original part Number: 040384; 043441; 23307 - clutch spring stud x 1