Same, started with 40/45lbs and that was ok, but slick handle started to problem for heavier weights. After that I really liked the Lifeline for powder coat version 24kg: https://smile.amazon.com/gp/product/B07DX5ZLK9

Forl 32kg I tried both Yes4All and BestBuy's TruGrit but handle was not smooth at all, ended up returning both.

Now I have Ketttlebell Kids Adjustable Comb, hopefully for life...