Product review (3 stars): not quite all there
Came without the triangular retainers.  I re-used the old ones.  When you put it back together, make sure that the belt is routed properly, the tensioner pulley is in place, and there is no twist in the belt.  I {sparingly} used red lithium grease on the roller axle plain bearings.  No mention of lubing anything on assembly in the directions, but the rollers seemed dry.