[CFMCNC]

We have been in on the bushing instead of needle bearing lifters since and before release to consumers .WE have not seen a wide variation in sizing but have heard of it.A failed needle bearing can cause thousands of dollars of damage .The bushing is a great insurance policy as the rarity of failures do minimal damageWe have sold around 100 sets of EZRoll lifters .Some in service for 100s of runs as in 5-6-700+.Bill C.