Liquid Cassettes produce a similar effect to 6" Liquid Wheels in an Effect Cassette form factor.
Please note that the old 3" Liquid Cassettes are no longer available. A new style 50mm cassette is available - both produce identical effects. A 50mm Effect Cassette cannot be used on an old 3" Cassette Rotator - the rotators are a different design.
A Solar 50mm Cassette Rotator is required to fit a 50mm Cassette to a Solar projector.
See also Printed Effect Cassettes