GraviTrax Expansion: Hammer

Propel the marble through your GraviTrax run with the Hammer expansion. When triggered, the hammer swings down and hits the marble to give it momentum and send it on its way. Includes six additional tracks. GraviTrax Starter-Set required. Contents: 1x set of instructions, 1x Hammer tile, 1x long track, 2x medium tracks, 3x short tracks. Total pieces: 7.