Sure Grip Roller Skate Pivot Cups (4) Pivot cups to suit most Sure-Grip plates including the Rock plate on the GT50 and Rebel and the Avanti plate. These are the original SG pivot cups. Pivot cups are important. You should inspect and change them every 12 months. If you don't and they break then you risk a broken truck which is much more expensive to replace. So check and replace your pivot cups regularly. If you're unsure if these will fit your plate please ask us. Each individual roller skate requires 2 pivot cups ie. a pair of skates requires 4 pivot cups. Sold as a set of 4. Please note: These pivot cups will also fit the original Powerdyne Thrust and Triton Plates, they are a little bit bigger and taller so it will be a snug fit but they will fit in there. Brand: Sure-Grip
