They come in different lengths of blade too, so that may be the unknown size in question. Personally, I think the Burrows ones are rather ugly (the way they bulge over the front of the clamp seems ungainly to me); the pro-lite ones (caressa) have a cleaner profile, and the ambrosio ones sit nice and flush with aero seat tubes.
They come in different lengths of blade too, so that may be the unknown size in question. Personally, I think the Burrows ones are rather ugly (the way they bulge over the front of the clamp seems ungainly to me); the pro-lite ones (caressa) have a cleaner profile, and the ambrosio ones sit nice and flush with aero seat tubes.