This is the new model 115mm grinder which is $67.98 on its own, so you get a 4.0ah battery and charger for an extra $32. I am guessing this is a promo deal so when stocks are gone that will be the end of he deal.
The main differences I know of over the old model is this has a tool free guard adjustment and has a slimmer grip. Has the same 8500rpm.
Available in most stores but widely scattered in QLD.
https://nrby.in/bunnings/0524180
Here is a link if you want to see the old vs new model. Specs are limited but you can see the difference in design.
https://www.ozito.com.au/comparelist/#/MzAwMDE4NSwzMDAwODYy
I/N: 0524180 for when Bunnings website plays up.
For cut off discs, my preference is for 1,0mm thick Makita and Bosch. Also I don't bother with grinding discs, I use flap discs. They remove metal way faster and don't bounce around.
Another good addition is a 14mm Fixtec nut which makes disc changes tool free. https://www.google.com/search?q=14mm+Fixtec+nut&sca_esv=0589…
115mm? Why?