303 Lever is the standard of samduksa's lever product  
 
It has balanced rubber tension and moderate neutral zone, suitable for most arcade games.
 
303M-DX-QR lever is low profile collar version of previous 303 lever. It is equipped with acetal bobbin produced by precision cutting for precise control Also, lever grip changed to clear type for classy look, and detachable without removing E-clip.
 
The short collar allows you to install the lever into Japanese style Fight sticks or cabinets yet it maintains the accuracy that came with use of the full collar. Shares same 303M-DX plate with Crazydongpal lever but there's a difference in performance between two of them.
This product is equipped with Sanwa type MJ mounting plate, compatible with most fight stick.