Blue Fox Classic Vibrax Plated 5/8 Oz Fishing Lures The flash and action of these lures is truly legendary. The free-turning brass gear housed within the lure reduces twist and adds vibration as it rattles against the outer body. .625 Oz Machined brass main body. Brass stamped blades are silver plated or copper plated and painted Blade will have the number 6 printed on it.