Cast steel, magnetic particle inspected. Pin dia. and jaw opening meet dimensions of solid thimble, closed spelter- and swage sockets. Note: Efficiency of a properly assembled Wedge Socket is 80% of catalogue breaking strength of 619637 EIPS class wire rope. Ask for details for correct and safe installation. Secures the tail or dead end of the wire rope to the wedge, thus eliminates loss or Punch Out of the wedge.Pin diameter and jaw opening allows the TERMINATOR to be used with UNI-LOC Closed Swaged Sockets and Closed Spelter Sockets.Eliminates the need for an extra piece of rope, and is easily installed.Incorporates Crosbys QUIC-CHECK GO and NO-GO wire rope gauge feature cast into the wedge.Standard Crosby old type wedge sockets can be retrofitted with the new style TERMINATOR wedge.For detailed installation instructions consult Unirope or your local Unirope Distributor.