Quick follow up:
My chains have arrived, I think CRC may well have lost some money on this sale, they are very chunky monkeys, five of them together weighed a good couple of kg in a jiffy bag and probably required an additional charge from RM over and above CRCs normal postage deal…
They look rather industrial / Motorcycle like TBH and the packet Blurb states they “should be used with heavy duty sprockets”
A Joining link was included with each chain so happy days.
Christ knows how my chain tools going to cope with driving the pins out of these bad boys though…
Should last till about the end of time I reckon.
Cheers for the PSA OP…