This is the OTS Assembled CR-4 Comm Rope w/ AMP-4M Connector Topside (for MK-7) to OTS-4P Hi-use Connector on Diver End Features: Material: 100% Polyester, Kernmantle Breaking Strength of Rope with Wire: 800 lbs (average) rope will break Wires: 4 wires -- Quad 4 Balanced Cable Size: 7/16" with wire TENDER&';S END DIVER&';S END AMP-4M, 4 pin male conn. with gripper ring Hi-USEA(R) OTS Connector OTS CR-4 ComRope is 100% Polyester, 7/16" static kernmantle rope designed with four specially configured wires down the center.