Please see my 100% Ebay Rating. I dont remember the brand name of these rims. All I know is that they are heavier than the norm and that they always made my various 12" toms sing. I used these on high end Ludwigs, DW, Pearl, Tama's and various old vintage toms. Sometimes, the difference wasn't as blatantly noticeable, until I was playing on stage with an entire band .... hitting my 12" with these rims always made me smile.