Panther Martin Classic Patterns In Line Spinner - The unique shaft through blade design creates the easiest and fastest spinning action in the world. Convex/concave blades send out sonic vibrations that are irresistible to fish. Our Classic patterns are time tested lures that are deadly on Stream and Lake Trout. Unique Shaft through Blade Design creates Easiest and Fastest Spinning Action in the World. Convex/Concave Blades Send out Sonic Vibrations that are Irresistable to Fish. Heavy Weighted Bodies Cast like Bullets and Go Down Deeper.