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EZ Tie knot tying tool
The EZ Tie knot tying tool can help you tie blood and barrel knots holding on to those stray tag ends
Feb 15th 2014/mj
The EZ Tie tool is a small block with springs and spring loaded pegs that help you hold onto those tags ends, which sometimes seem to have a life of their own, and want to slip while you twist and thread the lines to tie the knot.
The system is simple and easy to use as the video shows.
It's available online and the price is 28 USD plus postage depending on your location. % USD for the US, 7 USD for Canada, but no mention of international shipping costs.