Wire tensioning device can be used with 9 or 12.5 gauge wire.  Tension should be let off after the season.  Vertical slats should be installed around trees that the wire fastens to.  When the slats deteriorate, replace them in a different location on the tree or move them to another tree.  All galvanized steel construction.  Wire tensioning device has a spring to hold the latch flipper tight against the cog spool, which makes tightening the wire safer.

    Permanently hinged, flipper type catch
    Hot-dip galvanized
    American made
    Long-tested