anyone with these wipers getting worn out, I think I found a solution... simply order the rubber inserts from Honda... use the 2008 Accord passenger side, which is 475mm, and CR-Z passenger side which is 525mm
If you need 450mm, use the new Insight's passenger side
the rubbers are a unique 9mm design, most wiper blades on the market use 6mm, 7mm, or 8mm width... you must use the 9mm width or you will have issues!
EDIT: Honda USA part numbers (I don't know if it works in oz):
76632-TM8-A21 18" (450mm) refill insert
76632-TA0-A02 or 76632-SYP-004 19" (475mm) refill insert
76622-SZT-A01 21" (525mm) refill insert