Panther Martin Classic Patterns In Line Spinner - The unique shaft through blade design creates the world's easiest and fastest spinning action. Convex/concave blades send out sonic vibrations that are irresistible to fish. Our Classic patterns are time-tested deadly lures 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 irresistible to Fish. Heavy Weighted Bodies Cast like Bullets and Go Down Deeper.