One (1) Brand New Key Switch -- Heavy Duty (not the cheap ones) Provide the Best Security or Prevent Accidental Actuation Two (2) Switching Circuits: 1 Normally Open + 1 Normally Closed (DPST: Double-Pole-Single-Throw) Stackable Contacts: mix and match to suit your need (See picture below. Each switch ships with 2 contacts/circuits. Please purchase multiple switches to mix and match.) Contact Rating: 660V/10A, DC and AC Number of Terminals: 4 Panel Cutout Diameter: 7/8" (22mm) Comes with 2 Keys Switch Action: Maintained (Stay Switched) 90º Rotation Between Positions Key Removable at Either Position