These types of swivels are usually made with stainless steel bearings between a spindle and body that allows the swivel to rotate. These kinds of swivels are good because they can often handle heavy loads. They are also ideal for trolling. If you’re fishing for large saltwater fish, a ball bearing swivel is the best option.
A quality ball-bearing swivel contains polished stainless-steel ball bearings positioned between its spindle and body. This enables the swivel to rotate freely, negating any twist, even under heavy load. The perceived disadvantage of ball-bearing swivels is their price. However, in certain situations — especially offshore trolling — you can’t afford not to use them.