The diameter on section 2, 3rd clamp on an SLX is the same as the drain rod diameter.
Take the first pole length out then slip the half moon attachment in.
Much more control.
And looks a bit more professional than drain rods.
Havent had one customer complain about my professionalism because i
use drain rods Dirty 
Council estates tend not to mind Gazza 
I have never cleaned a single property on a council estate matey 
You're in Birmingham aren't you?
The entire city is a council estate.
With power stations.
You've been quiet on the jogging for a bit, everything a ok?
Very few real council estates left in brum,most of it was sold off
years ago.Lots of affluent people in the suburban areas.On the main
bristol road and surrounding areas leading into the city the property
ranges rom 5 bed to 10 bed virtual mansions and as you pull back from the
city center on the south side lots of countryproperty close to where i live
and one of the prettiest villages within a city you could find built
by the cadburys family

Still running,been out this morn,find this weather a struggle to run in though