Cranbourne, I went to the Rover shop here this morning and he reckons he can get the thin Rover 560 blades. They always try to sell the heavy ones but when I gave him the part number he reckoned he can get them. $4 approx for two blades, no bolts. The heavy genuine Rover blades are $8.40 for 2 incl bolts.I wouldn't even know where to get the thinner ones. Blody hard enough getting the commercial blades.
EDIT" part number for thin 560 blades is A16355