Good afternoon,
I've found a great supplier of very reasonably priced (about £3 each for the M8 version) stainless steel turnbuckles which can be ordered with an eye at both ends.
Go to www. westfieldfasteners.co.uk an look under 'Marine Hardware'.
I have often found that stainless fittings for boats seem to be prices very competitively compared to other stainless hardware. I mean, just look at this https://arthurbeale.co.uk/acatalog/Mirror-Polished-Folding-Grapnel-Style-Anchor-in-316-Grade-Stainless-Steel-EBS0504A0025.html#SID=1116 I don't even have a boat, but I really want one of these!
Cheers
Darren
Cheers Darren - those turnbuckle things can be tricky to find! Polished grappling hook ? - Just what every cat burglar needs
Measure twice, cut once...