Mounting hole center spacing 1 inch Has three screw terminals labeled Com, NC, NO body size 1.93 inches =49.1 mm long, .1.16 inches = 29.65 mm high x .66 inches =17.4 mm thick (not including terminals & lever) stainless steel roller-lever; center or roller about .36 inch =(9.2 mm) beyond body Single Pole Double Throw