Suzuki Club UK

I'm looking for wheel spacers. Does anyone know good ones for the BONOSS forged active cooling wheel spacers?
Can anyone tell me what is the difference between it and the common wheel spacers in the market？ I'm not ready to buy wider tires yet. I would also like to know the pros and cons of having spacers before I buy, thanks.

I have no idea what BONOSS is but the spacers I use are LA Supertrux ones. Made from billet ally they are light and strong...but nor cheap. Grayson spacers, on the other hand, are cheap and don't fit very well!