You might not like the cheap-and-cheerful ones I fitted to my Curvy,
https://www.ebay.co.uk/itm/22mm-7-8-...gAAOSwiSJbfN~G
£10 ish.
As they are universal had to do a but of pushing,bending and a little fettling of the metal arm bracket to get them to fit but nothing hard to do.