Hi Paul you can try an hunt down a heavier disc if you want, the standard disc will stand up ok, might wear out a bit quicker,depends on how much work you give it,that also depends on how tight you keep the center nut and the blade nuts, these are the bits that suffer most of the damage due to things not being tight. As I said you need the blades to suit the 600 the 19/20 inch blades will be too short and will only give you a max 20 inch cut. The 19/20 inch blades are 120mm long, the blades from the 600 are 140mm long, therefore you get a 22 inch cut.
