Replacement pivot cups for PowerDyne Thrust Plates. Please note that there are TWO DESIGNS. There IS a difference in the Thrust plates made before and after June 2020. Please see the comparison photo as these are NOT interchangeable styles. Pre-2020 Design Rubber pivot cups Narrower pivot arm insertion point Trucks with slimmer pivot arm Removeable toe stop housing insert These cups will also fit PowerDyne Triton and Dynapro plates. Current Design Delrin pivot cups Wider pivot arm insertion point Trucks with thicker pivot arm Toe stop housing molded into base plate Both options are sold in sets of 4. Compatibility: Please ensure you select the correct pivot cups based on when your skate was manufactured. If you are unsure as to when your skate was made, please contact us. Compatible with the Thrust plate (Lolly Outdoor Complete, R3, Angel, Celebrity other entry packages). Not compatible with imported models with the Marvel plate (Beach Bunny, Rainbow Rider, Panther, Jungle, Dart, Orbit).