Tried them on Andro Inizio OFF blade (wanted to build a economic racket for my brother).
In my normal combo i am using bty rozena and xiom vega euro df, compared to that this rubber has more direct tracectory, good spin and adequate speed.
One of the weird things I encountered is I ordered both of the rubbers in soft hardness but black one is a touch softer compared to the red rubber, I guess different batch.
If you're in a search for affordable equipment i really recommend this as a contestant.