See also:
SLX https://www.youtube.com/watch?v=95TMc80xE68
Deore https://www.youtube.com/watch?v=hkRoWQhR-JQ
Alivio https://www.youtube.com/watch?v=S7E5bz8-8tQ
Where to buy Shimano components: https://www.awin1.com/cread.php?awinmid=2698&awinaffid=241507&clickref=&p=
source