Simplex pulley wheels - Black plastic body - ten tooth design - capped bushing style interface - model 3574 ... [USED - these are in what I would consider to be good condition with evidence of only light to moderate wear (...more so on one than the other) and are certainly of providing reliable service for yet many more miles - suitable for use with a wide range of Simplex rear derailleurs including their SLJ AR 615, SLJ 5000, SLJ 5500, SLJ 6000, SLJ 6600, LJ 1000, LJ 4000, Criterium, Maxi-Prestige, and select SX models]
