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. Super sharp premium quality hooks keep fish caught. Genuine gold and silver blades reflect more light & attract fish. The All-Gold, All-Silver patterns imitate baitfish. These spinners can be effective on many species such as Trout, Bass and Pike.