Thanks - The 10cm sleeves look like they should be better at the expense of being able to fit less weight on. But they seem like a good solution to not needing a stack of dumbbells which take up space and able to reuse the weight plates elsewhere on a bar.
I guess that’s enough for 2 larger plates a side, so you could go up to 35kg per dumbbell using 10s and 5s. A 5, 2, and a 1 per side should work too.