The XDI (Xtra Durable Insert) is
an innovative screw-in insulator. This (patent pending)
screw-in insulator can be used to attach electric fencing wire
to wooden posts, while offering a number of special features.
Its continuous metal core makes the XDI more robust than any
other screw-in insulator. This core is located precisely in the
center, and reduces the likelihood of short-circuits to zero.The
XDI is also immediately recognizable by its design: black and
orange, with the plastic orange section serving as a wear and
tear indicator. It signals when the XDI needs replacing, and
therefore guaranteeing optimal current conductance..