four footed. the threads are like these metal thread things they screw into the speaker cabinet. i just found some at parts express. theyre called t nuts. heres the link.

http://www.partsexpress.com/pe/showdetl.cfm?&User_ID=13714657&St=1093&St2=51436028&St3=-50352430&DS_ID=3&Product_ID=120397&DID=7

BTW ive been tweaking today, biwire,no biwire, sub no sub, and ive got major standing waves problem in one of my corners. i might have to do some room treatments! The sub i have is a 99 dollar KLH peice of work. wish i had a decent sub to hook up that would actually keep up with the m80s.