Somebody will know what this bit is (twin)

[Andy_B]

Trying to sell a few bits on the BAY of THIEVES so i need an idea if this bit should be listed with the master cylinder, or seperately...and WTF it is would also be a good start...am thinking Servo or ABS Gubbins...not needed anyways... and i need some rear arms uprights and another 1/2 set of polybushes...Bottom pic dont know what the first one is either !!!