Difference between bbs wheels

Just wondering if anyone knows the Difference between bbs rm 010 wheels and rm 012 wheels thanks

pretty sure the rm 010 are white edition but they are 7x15 with a 1" lip so 6"barrels

rm012 are 6" barrel with a 0.5" lip so 6.5x15 hope this helps

Oh ok cool thanks I see and the ET are Different as well  would a ET40 fit ok on a mk1golf?? 

The normal offset for VW alloys is ET35 the ET40 might not clear your brake callipers as it sits in 5mm more towards the car. Best to trial fit to be sure.

Got a bit Carried away with the eBay the over night so got some bbs rm 010 what are et40 on there way so hoping they fit! 
I buckled under the pressure of eBay dam it!