.csB10BB1B{11pt;font-weight:normal;color:#000000;font-style:italic;Arial;} .cs6DB83BB{11pt;font-weight:normal;color:#000000;font-style:normal;Arial;} .cs327D614{text-align:left;margin:0pt 0pt 19pt 0pt;line-height:1.15;text-indent:0pt} When a marble enters the Helix it will move down to a lower level without changing its direction. In the GraviTrax PRO Helix, up to six marbles can pass through this Action-Stone at the same time! Build new routes and create crazy trick shots, expand the marble run with new ideas, expansion sets to keep the ball rolling – compatible with all GraviTrax & GraviTrax PRO sets & accessories. Experiment with gravity to power your ball through twists, loops and turns in a race to the finish line – great building game for boys & girls. The GraviTrax track system can be extended indefinitely with extra track packs and add-on’s – each sold separately.
