Those are the style of spacers I used to have, 
 
The stock CB size of my car is 65.1 I'm getting adapters to fit completely different aftermarket wheels or maybe factory toyota, nissan etc wheels of completely different bolt pattern, Sorry if I wasn't being clear. 
If I get a hubcentric ring that is 65.1 I know for example I wouldn't be able to fit some factory IS250 wheels that are 60.1 CB 
The company I'm getting from are selling a 
One piece hubcentric that looks like this 
 
  
They can also make a 
One Piece hubcentric/wheelcentric  that is similar to the eibach pro kit spacers I already have. These are $100 more in total than the first ones 
They also make the ones that you posted also custom dimensions 
The key is that everything I'm looking at is 
Custom So I can have any wheel bore, Hub bore, bolt pattern, and thickness that I desire