TAMIYA 15450 BASIC TUNE UP SET TAMIYA BASIC TUNE UP PART SET FOR AR CHASSIS This set includes newly-designed FRP wide plates to enable various rollers to be attached at the front (9mm, 11mm, 13mm, 19mm) and rear (9mm, 11mm, 13mm, 17mm, 19mm) of the chassis, 13mm low-friction rollers, mass dampers, and stabilizing poles are included as well for more modification possibilities. Compatible with AR, MS, VS, and Super XX chassis cars. Wrench and rubber tubing for attaching stabilizer ball caps are also included. TAMIYA ORIGINAL