KR 시리즈 Rocker Actuators. A wide variety of actuator colours and markings, suitable for use with KR series switch cases (see typically ; 507-536 507-536 , ; 507-429 507-429 etc) Most symbols meet ISO 7000 standard "graphical symbols for use on equipments" See also actuator removal tool ; 507-312 507-312 Actuator material ABS