This handy Cuda knot tying tool is the perfect accessory for your tackle box. Fits various sized hooks that can be placed inside the casing, with the eye end accessible for easy knot tying.  Makes joining line to line or line to leader a snap and swivels for easier tying.  The integrated carabiner and clip can attach to your backpack, tool sheath or to your rod, to protect from exposed hooks.  The knot tying tool also features a handy exterior line cutter and zinger lanyard.  Also included in the package are instructions for tying some popular fishing knots.