The Arukazik Japan Knot Protector is a microscopic, highly durable rubber shield designed to eliminate knot failure. Simply slide it onto your line between your weight and your swivel. It acts as a premium shock absorber, taking all the abusive impact and keeping your knot 100% secure.
 
Maximum Impact Absorption: Completely cushions your knot from the repetitive, damaging impact of sliding sinkers, Carolina rigs, and heavy floats.