I want to buy a table tennis rubber

Hi Yash, 

OFF- or otherwise only applies for blade... 

42.5 degree can be quite spinny if you use it well, but by wanting a relatively high degree rubber, I presume you subscribe to Chinese philosophy(?)

Why not try Hurricane 8 Hard? I personally would not feel too at ease using that, and wouldn't recommend unless you have sound Chinese technique, and that you are used to playing with hard rubbers.

I agree with Benzene, although you can now get some pretty hard European style rubbers too.

To complicate things, the degree ratings are not consistent across regions or even brands so you'll need to provide a reference point, e.g. a rubber you've used that you know to be 42.5, or at least a broad category such as 42.5 degree Chinese/Japanese/European or a brand of rubber.

Maybe even provide us with your rationale for selecting 42.5 degrees specifically.  For example, are you looking for speed (so think you need a hard sponge) or visa versa - you want better control, do you need a hard sponge to suit a balsa blade, etc?.

Do you want a linear rubber or one with a lot 'gears'?  Do you want a classic feel or a tensor rubber with lots of catapult?

Finally, what about a control rating?  Do you have exemplary control and so don't care, or are you needing a certain level of control from the rubber too?

Cheers