Up for sale is a NEW Vacuum Advance Chamber for the ignition distributor.  Replaces GM #s 1116085, 1116100 , 1116104.  We have a couple of these available, so the one you receive may look slightly different than the photos but will be in the same NEW condition.  This will fit the following:

1955-1956 Chevrolet Fullsize Cars like BelAir, One Fifty, Nomad, Two Ten, etc. with 265ci V8 engine