I am currently getting new rails on my 4 1/2'X9' Tiffany table. I am also getting it reclothed. I would have loved to have the Simonis 4000 or the Strachan cloth but because of budget concerns I settled for the 860 Simonis because that's what the dealer said and some other websites I researched said would be good to use. The 860 is 90% worsted and 10% nylon according to the websites I researched.