One Size fits most children ages 4-8

159 and 169 models feature 6 hole universal baseplate with old and new school mounting pattern

non-distortion fiberglass filled pure nylon cage keep the balls precision spaced

Flying out the lab to the streets and beyond

Bones Reds Bearings thunder One Size fits most childrenDetails Bones REDS are manufactured in China to our Bones Skate Rated specifications in a manufacturing facility dedicated to producing the highest quality skate bearings in China. They are inspected twice before being shipped to skaters and offer the greatest combination of performance, durability and low cost in the industry. Because they offer near Bones Swiss performance at a fraction of the cost, they have become the best selling bearings.