Fitting bath waste - what tool?

[shortstrawfate]

Don't laugh, I'd like to think I'm generally pretty handy, but as part of our bathroom reno I've got a waste similar to this to fit:

Matt Black Bath Waste and Overflow | Victorian Plumbing

Arezzo matt black bath waste and overflow at Victorian Plumbing. Browse our full range of replacement bathroom plugs, wastes and bottle traps online.

www.victorianplumbing.co.uk

The strainer/plug is one removable piece and when that's removed the drain is basically totally open, no crossbar/grate or anything to tighten it up with. There are four notches equally spaced around the drain which presumably are there to tighten it with a specific tool but there's nothing else in the box. Is this a standard tool? I've been searching for days and feel like I'm losing my mind.

 

[Madrab]

Sometime you get a tool, sometimes you don't. McAlpine are very good at supplying tightening tools for their stuff.

With that though you don't tighten the top waste, you tighten the section below while holding the top section, if you even have to hold it. It doesn't need to be that tight, hand tight with 1/2 a turn should be all it needs, use a little sealant either side of the bottom washer just to fill any imperfections in the bath finish.

 

[shortstrawfate]

Makes sense - thank you!