Fader type 1 = shorter shaft type

to fit:

Frog Series
Leapfrog 48 & 96
FROG2
Solution & Solution XL
ORB
Illusion 500
Jester Series
Juggler
Diablo
Alphapack 2 & 3
FLX

Fader type 2 = longer shaft type

to fit
Level Plus series
Alcora
Elara
Sirius 250 & 500
Illusion 120 & 240

Fader type 3 = older wider shaft type

Light Master XL & XLS
Light Master 1200
Sirius 24 & 48
Level Series (not  ‘Level Plus’)
Alphapack 1
Betapack Plus Series (MK 1 & 2)