High density miniature circular electrical connector. including one form one contact to 128 contacts.，Contact codes including #22D、#20、#16、#12、#16.coaxial and #8 tri-coaxial ，Bayonet coupling, locking and releasing quickly ，Main key/keyway polarization，EMI/RFI shielding and shell to shell conductivity，Shock-proof and vibration-proof ，Fluid immersionApply widely in aviation, space and military systems，Meet the US military standard: MIL-DTL-38999 series II.