How do I identify / assemble the TechLiner Regular length (5.75") Uni-Ball Signo refill kit?

TechLiner Signo Refill Assembly (regular length 5.75")

1. Signo ring magnet*

2. Signo wave washer x2

3. Signo refill

4. Signo Regular length tail spacer

5. Tail magnet*

*Magnets are directional. Inserting them reversed will cause the magnetic cap to repel.