Thats a great price on the rollers. The description says they fit loadrite trailers. I'll have to take a look at my washers and hog rings tomorrow to see if i can reuse them since they aren't cheap. I thought I read somewhere that you could use cotter pins instead of the hog rings (might have to do some drilling) If the hardware is shot I may go with this kit that includes the hardware
http://www.boatbandit.com/ribbed-roller-kit-4885.aspx
The cheapest I could find the hardware was around $5 for each roller. That brings me to $226 whereas the kit above would be $180.