I bought Kics 10m for the rear for my Volk rims I wanted to space out. Their nut type is not something I would use even though they use their own locking type socket.
I had the +20 Ichiba Version 2 on the rear for the Sport rims and they give a really nice look, They use real lugs and a centering hub that the Kics do not include in their kit.
Im selling +10 front and +20 rear if you're interested too at a discount. The fronts are new and not used as I found a set or Volk GTS rims and tires.
Ichiba Spacers