Also the Paterson System IV reels accommodate 220 (same adjustable reel for 35 mm or 120/220, and since 220 is the same length as 35 mm/36 exposure...), as do other adjustable plastic reels that take 35 mm and expand to 120 width.
There are 220 reels in stainless; they have the same thinner spiral wire and closer spacing as 35 mm, but with 120 film width. Most likely you can get one in the Hewes or Kinderman brands if you shop around a bit, and Nikor made one long ago. I also have a very large Nikor tank, the one that accommodates the 4x5 cage, but which came to me with a pair of large diameter 220 reels. Uses lots of developer, though; about 1.3 liters to cover 2 rolls of 220...