FC/PC SAA-4/ SEIKOH GIKEN
FC/APC SNA-1/ SEIKOH GIKENU
SC/PC SSC-A/ SEIKOH GIKEN
SC/APC SSC-A/ SEIKOH GIKEN
The design is the same with NTT
Material: metal
Precision sleeve material: ceramic
Complance with RoHS,flame resistance including dust protection cap.