Knob, Seat Post

This part is NO LONGER AVAILABLE. You cannot purchase this part. Can I still get this?

Listed on the following equipment:
Epic - Cups X-Power MB200 - AEVEX17008.0
Proform - 180 ZLX - PFEVEX71908.0
Proform - 2.0 ES - PFCCEX51913.0
Proform - 2.0 ES - PFEX51912.0
Proform - 2.0 ES - PFEX51912.2
Proform - 2.0 ES - PFEX51912.3
Proform - 200 ZLX - PFEVEX73108.1
Proform - 225 ZLX - PFEVEX73012.0
Proform - 225 ZLX - PFEVEX73012.1
Proform - 225 ZLX - PFEVEX73012.3
Proform - 280 ZLX - PFEVEX73108.0
Proform - XP 210 U - 831.21941.2
Proform - XP 210 U - 831.21941.3
Proform - XP 210 U - 831.21941.5
Weslo - Pursuit Easy 100 - WLEVEX71808.0
Weslo - Pursuit R3.8 - WLEX91208.0

* Images may not be identical to part.