Dealership charged me $30 for the 3 refills. Saw them on eBay for $20 shipped, but were different part #s. Both specified 2015-2017 Fit.

 

Until a few years ago, you could find replacement rubber strips for just about any car. There were 4 or 5 sizes that fit almost any blade. You would buy two 21 inch (50 cm) strips for about $2.75 US, then cut the rubber strips to length with a razor blade and snap the metal strips to length where they are scored every cm. For less than $3 you could replace the front wipers. For the rear, you would do the same thing but you'd have some left over for next time. A few years ago they seemed to disappear from retail parts and accessories stores.

The 4 main sizes, if I recall correctly, were 6mm square, 6mm trapezoid, 8mm square, and 8mm trapezoid. That's the description of the cross section – when you cut the strip with a razor blade.

 

For 2015 Fit there are no metal splines used in either front wiper rubber strip. Only the rear strip has metal splines. Most standard rubber strips have 2 grooves on each side, one groove for the metal spline, the other groove to slide over the blade's claws. The "full contact" blade on the Fit's front window has only 1 groove on each side. There is a full length metal claw inside the blade, which slides into the groove on each side. This is in contrast to old style blades which have 4 or more small claws. Sorry I didn't see where you said 2007 Fit - about which I don't know.