LEGO set theme: 1999, 2000, slizer

list of year 1999 slizer sets:

1061 single disc pack
8500 torch /fire
8501 ski / ice
8502 turbo / city
8503 scuba / sub
8504 jet / judge
8505 amazon / jungle
8506 granite / rock
8507 electro / energy
8508 supplementary discs
8520 millennium / millenia

list of year 2000 slizer sets:

8521 flare
8522 spark
8523 blaster