FYI,
Response from OEdiscount:

Q: Are these complete kits with bolts, washers, nuts, etc or just the flex disk?
A: Yes the kits are complete.

Q: Are the front and rear flex disks different part numbers? The parts breakdown is not quite explict.
A: The front part# 2304100115 / Rear part# 0004110200
You may want to include a vin# so that I can verify the parts are correct. The above are based on 2002 SLK32.