I've installed in in my Harley Benton ST62.
It is overall good and does the job - improved stabiliry and removed rusted trees that came with my guitar.
It is very good quality, and good looking, good size and goood price.
But, I would suggest to manufacturer to be some choice in roller height, I would like to have one taller and one smaller roller on my guitar. That is how I would like it, not necessary that it is correct.
Also, rollers on the tree are connectet, it would be great if they are indepent one from another so the string can move on micro level independetly.
All in all, nice thing cosmeticaly.