Need some help with Case 621 attachments..

Hello.. I'm needing to find out what kind of root rake attachment fits a Case 621 wheel loader? I've found a seller on ebay that has a ton of them but I have no clue what will fit this thing. Not sure if I can post links yet but will give it a shot, here's one on ebay I'm looking at: http://www.ebay.com/itm/170749922293?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 Their username is: 0992 Does that fit what I have? Or is there some place that sells what I need? Any help at all would be greatly appreciated, I'll admit I'm pretty much clueless and just getting into this.. Thanks! Allen