Replacement Rubber Pivot Cups for Sure-Grip Plates.
Each plate requires two pivot cups, so be sure to purchase 2 packs for a full set!
Measurements:
Outer Diameter: 9/16" (Black)
Inner Diameter: 5/16" (Black)
Height: 11/16" (Black)
Sold in packs of 2  - one pair of skates uses four (4) pivot cups.
Compatible with:
-Rock Nylon plates
-Avanti Aluminim plates
-Super X plates