Original classic looking Monza non locking ALLOY cap with the mounting collar to fit tank included.See
MONZA also for description
To fit the collar for this cap you will require 10mm(0.3937")just over 3/8" of petrol tank neck accessable above the body seal to allow fitment,many later cars do not have this much neck protruding so check first.
Now with chrome on metal catch for longevity