Prox PX315K MG Black Auto-Lock Joint,

The magnetic joint uses a powerful ball lock mechanism to prevent tackle from falling off. When attached, it is secured with a ball lock pin, preventing it from falling off even when hit by flying or bouncing. To remove tackle, simply pull the sleeve. The magnetic force automatically locks the attachment. It securely locks even heavy items like fishing tackle handles and gaffs. It also prevents the net from accidentally falling off if it gets caught on a rock or branch. Lightweight aluminum body with precision machine cutting and anodizing treatment for increased surface hardness.