These are lovely little chain tugs for 10mm or 14mm axles (use drop down menu)
They stop your axle slipping forward when using horizontal dropouts, and make getting your chain tension right damned easy.
Sold individually, buy two if you need two. I just use one on the drive side
When I got this component and examined it, My reaction was "what! Four and a half quid? well fan my brow"
Stainless steen nut and bolt, anodised alloy body well made and it works.
only problem I can see is if Your axle is right down the slot it will stop it fitting but this is easily remedied by adding a link to the chain.