This is what 1X proponents have been waiting for.
+ Nickel-chrome plated steel cogs
+ Two largest cogs are on an aluminum carrier
+ Fits Shimano/SRAM hubs
+ Compatible with SRAM and Shimano long cage
+ 17% range increase over 11-36t
+ No modifications need
+ Plays well with SRAM XX/XO and Shimano SGS rear derailleurs