Top & Bottom Set of 8: $12
These Roller Skate Cushions are designed for the Bont Prodigy, Tracer, Infinity, Athena, Zeus, and Carbon Zeus skate plates but may fit other roller skate brand plates with the same dimensions. The cushions are made with extremely high-end urethane and they are made in the USA. They come in 4 hardnesses.
Specifications: 
Color/Dimensions: Purple 78A, Blue 83A, Black 88A, Red 93A
Top Cone dimensions: 14.2mm (H) x 25.4mm (Diameter)
Bottom Barrel dimensions: 14mm (H) x 25.4mm (Diameter)
King Pin Hole diameter: 9.5mm
All Zeus Plates - require Bottom Barrel cushions only