This is a full set of four bevel swingarm nuts suitable for boxer twins post 1970.

Suitable models include:

R45  R65

R80GS  R80RT  R80ST

R60/5

R60/6  R75/6  R90/6

R60/7  R75/7  R100/7

R100S  R100CS  R100RS  R100RT

R90S