Which Arctic Butterfly (Visible Dust) for a 1.3 crop body?

I have tried for two days to figure out which Arctic Butterfuly brush I need to buy for a 1 Series Canon... actually I could also use one for a 1.6 crop as well. The Visible Dust website is so slow it is impossible to find anything, and the descriptions at B&H leave a little to be desired. Does anyone have one of these and have any wisdom? SL700, SD740, etc.. ... such useful names, and not much in the description to identify what is included.

I just purchased the entire Arctic Butterfly® SD800 Pro Kit from B&H, and it has brushes for my 20D (1.6x) and my 5D (1.0x). The Visible Dust documentation says you should use the larger brush for both 1.0x & 1.3x sensors. I got the kit with the sensor loupe and am very pleased with it. It really makes the dust easy to see and so far, the Arctic Butterfly has worked as advertised.

I am not sure how to order the larger brush without ordering the kit.

Hope this helps.

What I don't really want is the separate brushes. I'd like a an Arctic Butterfly and the attached brushes for the 1.6 and 1.0/1.3. What I don't want is the separate brushes that you have to spray compressed air on to use. I thought that kit came with two sets of brushes... the stand alone ones, and the AB ones. I would like the loupe I think.