What's the difference?

Clic Gels
Snap-on stackable gels for A-series flashes.

Diameter: 7.5 cm / 2.95 in
Number of variants: 7 (effect) and 5 (correction)
Kit available: 5
Stackable: Yes
Adapter needed: No\
See Clic Gels

OCF II Gels
Magnetic stackable gels for battery-powered monolights.

Diameter:
10 cm / 3.94 in

Number of variants: 7 (effects) and 5 (correction)
Kit available: 1
Stackable: Yes
Adapter needed: Yes (OCF II Grid & Gel Holder)
See all OCF II Gels