The SpinLord Quokka II combines the top-sheet of the Quokka with the red dampening sponge of the Gigant.
So it is not really a new rubber, but a new version of the Anti rubbers we already have.
The Quokka II is even slower than the Gigant due to the softer and slower top-sheet. Also, the Quokka II is slightly more elastic than the Gigant, and the "Anti-effect" is slightly stronger. But in return, it also generates less own spin.
Overall the differences between the Gigant and the Quokka II are rather small, but for many Anti players even small differences are important. On the other hand, the difference in speed between the Quokka and the Quokka II are gigantic.
Please note the Quokka II is sold with the packing of the Quokka. This rubber is only produced in small amounts and therefore currently has no card design of its own.