Canon EF 20mm f2.8 USM lens hood

Just wondering if there is any other lens hood that fits on the 20/2.8 prime, except the EW-75II. I don't want a screw in hood.

I am using it on a 7D, the focal lenth is 32mm (equivalent), so the field of view is also cropped. The 35/1.4 L USM is very close to this, but I don't know whether the hood bayonets are the same. Or the OEM lens hood makes the right job and I shouldn't bother about the field of view and do the math whitch hood will fit?