4 Channel buffer-Not recommended for new designs Circular Connector; MIL SPEC:MIL-C-26482, Series I; Body Material:Aluminum Alloy; Series:MS3124; No. of Contacts:21; Connector Shell Size:22; Connecting Termination:Crimp; Circular Shell Style:Jam Nut Receptacle RoHS Compliant: No 4 Channel buffer Device with high capacitance load capability