If your Xone Mixer has a Penny + Giles crossfader, all use the same model:
AI4222          P&G XFADER 45MM 50KB XFADER
Note             The crossfader knob is sold separately:
AJ5320          P&G FADER KNOB XONE BLACK-WHITE LINE

There are some spare parts for the crossfader that can also be purchased individually:

AI5291          FADER SPARE P&G SHAFT          
AI5292          FADER SPARE P&G STOP           
AI5293          FADER SPARE P&G TRACK 50K

Note:            Fader plates and screws are also sold separately

Contact your dealer or local distributor for more information on availability and pricing.

ai5291__fader_spare_p&g_shaft

ai5292__fader_spare_p&g_stop

ai5293__fader_spare_p&g_track_50k