This sale is for one pair of really excellent condition rear lens and body caps to fit all RB67 lenses (other than the 50mm f4.5), plus the RB67 Pro and ProS bodies.
These caps are genuine Mamiya, not an Indian or Chinese clone, and show only normal very minor signs of use.
Plenty in stock – but just one listing here. If you want a few caps (or other sizes), just ask.