This is a pack of optional Team Losi Racing Grooved Slipper Plates. The TLR Race Team has been testing the grooved slipper plates with great results. The machined grooves "scrape" off any build-up that can accumulate on the slipper pad and helps the slipper drive system maintain an ideal surface for proper slipper function. This results in longer slipper pad and plate life, an easier to set slipper, more rear traction under acceleration and improved on track consistency. Features: