what is the adaptor size

[snipe3000]

i have a canon t2i and i will be using the kit lens with this matte box i found on ebay i wanted to know what adaptor ring size i would need? and would this be a good matte box to get for starting

http://cgi.ebay.com/Matte-Box-XL1-X...rAccess_RL&hash=item1e5f5e7f4d#ht_2466wt_1239

 

[Shigeta]

It comes with a 72mm adapter. You need to get 72mm to whatever lens mm you're using.