Tread on removing ABS with some specially made pipe joints

[JK]

Hi guys many moons read a tread where some clevver ok made some allu fittings where the pipes are joined and thus no need for new pipes and also easy to reinstall ABS?
Someone maybe know where this one is pleasseeee

 

[Chrisl]

 

[Manic]

 

[JK]

 

[JK]