This set of ball bearings (model TKRBB13194) is a great addition to your RC car or truck. With a size of 13x19x4 and a quantity of 4 pieces, these bearings are perfect for providing smooth and efficient performance. Made for use in radio control and control line toys and hobbies, these RC model vehicles and kits are perfect for car enthusiasts. The bearings are made from high-quality materials to ensure durability and long-lasting use. Add this set to your collection today and experience the benefits of improved performance.