I had a pair of ebay ones on my previous car with no issues and just bought these for the box.
HUB CENTRIC WHEEL SPACERS ADAPTERS ¦ 5X130 ¦ 71.5 CB ¦ 14X1.5 STUDS ¦ 7mm AUDI | eBay
I figured a piece of aluminum is a piece of aluminum. I did, however, buy quality extended bolts (H&R). I feel comfortable buying cheap spacers, but not cheap bolts.