Model Z-15GW-B Actuator Action Momentary Actuactor Type Long Slim Lever Contact Configuration. 1NO+1NC(SPDT) Mounting Hole Diameter four / 3/16" Hole Center Point Distance 26mm / 1" Pin Diameter ~10mm / 0" Body Dimension ~49 x 17 x 33mm / 1" x 0" x 1" (L*W*T) Color Black,Silver tone Material Plastic, Metal Rubber