Speed into high gear. Beyblade x introduces the xcelerator gear system. When the gears of the bit and xcelerator rail meet; tops rocket forward in an xtreme dash reaching intense speeds that allow for breathtaking bursts and colossal crashes. Only compatible with beyblade x system. 3 easy to assemble pieces. The interchangeable blade; ratchet; and bit layers of beyblade x tops assemble and reassemble with a quick twist and two clicks leaving you ready to launch into battle. Includes 1 beyblade x top