GKZ54M,GKZ KEYS -UP-DOWN ADJ KEY
GKZ55,开关硬件 SAFETY
GKZ55M,GKZ KEYS -MULTIDIRECTIONAL KEY
GKZ56,KEY STRAIGHT KEY GKE AND GKM
GKZ56-C,开关硬件 LIMIT SWITCH-OT
GKZ57,KEY 90DEG GK/GKL/GKR SERIES
GKZ57-C,开关硬件 SAFETY SWITCH
GKZ58,GKZ KEYS SPRING-LOADED
