Pig Bearings are ABEC 5. Come in set of 8 bearings with removable chromium steel dent resistant red shields. Easy cleaning. High speed nylon ball retainer. 7 ball design, grade 10 balls. Heat treated black inner and outer bearing steel. Super finish for a faster spin. Synthetic oil. Lightweight heat. Treated red spacers. Bearing spacers included. Comes with Pig sticker.