Note also the size of the wheels is 115mm, and 28mm wide, so wider but not as much as the 12std.
In general the wheels are 24mm wide, and the 12std is 30mm, so it's an ideal 2 between.
And to finish a new brake system 2 in 1.
Indeed it is in 2 parts, a first fixed and the 2nd flexible. You can also remove the 2nd part to make it a brakeless.