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They have 13/16 x 5/8 in 180 and 320, they also have 3/4 x 1/2 in 120/240/400 and 1 x 1/2 in 400. I'd probably get the 3/4 x 1/2 in 120/240 and the 1x1/2 in 400 if I didn't already have a good supply...

I didn't know they stopped carrying them.. Do they have anything in comparable sizes? 1" diameter should still do the trick, just not last as long, but you could still do 5-7 blades with one.