6th SenseA(R) Divine Umbrella Rigs are handcrafted with stainless steel spring wire that has the perfect balance of flexibility for vibration and the durability to last. Each Umbrella Rig features a built-in swivel head that allows it to maintain balance and move with the fish when you get them hooked. Built-in swivel head Ball bearing swivels Stainless steel spring wire Ultra-strong snaps Polished nickel blades Order today!