Cable Gland type connector or straight coupler

[600rob]

Im looking for some sort of cable coupler or connector to connect and fasten to a hole in a metal box at each end with a locknut. Allowing a cable to pass from box to box whist being protected inside the coupler.

The closest thing i can can think of is a cable gland but this only has the lock nut at one end and the gland at the other. I need something with the locknut at both ends. Ive tried looking on RS and searching things like cable gland coupler but can’t find what I’m after.

Does such a product exist and if so could someone tell me its correct name and where i might get it?

Thanks

 

[DetlefSchmitz]

Something like this?
http://www.tlc-direct.co.uk/Main_Index/Conduit_Steel_Index/25mm_Conduit_Fittings/index.html

 

[333rocky333]

A 20mm steel nipple with 4 galv locknuts or milled edge lockrings, plus 2 female brass bushes.

 

[ban-all-sheds]

Wouldn't a coupler and 2 male bushes be simpler?