What Is This Called Please?

[woofgang]

I have got a thing that is like a link from a chain. It has got a section which unscrews so that it can be used to join chains together or to fasten the last link of a chain to something. I want to buy some more online but don't know what its called so I can't search for it. Anybody got any ideas please?
many thanks

[gness]

Chain link coupler?

[SlackAlice]

Chain link joiner?
Like this?
http://www.ebay.co.uk/itm/like/321549669531?limghlpsr=true&hlpv=2&ops=true&viphx=1&;hlpht=true&lpid=108&;chn=ps&device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0-L&ff12=67&ff13=80&;ff14=108&ff19=0

[The Builder]

Try "snaphook", or even a "D"-shackle, Woofts

[The Builder]

...more likely this ..........

http://www.ebay.co.uk/itm/Quick-Chain-Repair-Link-Links-M12-12mm-1-2-BZP-Bright-Zinc-Plated-Galvanised-/390956462251?pt=UK_BOI_FarmingEquipment_RL&hash=item5b06d230ab

[woofgang]

Thanks all....that's exactly it!

[gness]

Welcome....handy little things those.......☺