The Swiss Bobbin Knotter II tool, is a nice piece of Swiss craftsmanship from Petitjean Fishing Equipment.
With a little practice you can quickly make strong, low profile connections between braid and mono/fluorocarbon lines, 20-200lb or 0.6-2mm diameter.
The adjustable drag and two bobbins(light/heavy) control the tension for perfect high-precision FG and PR knots.
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