The LEGO Technic Monster Jam Max-D 42119 building kit is the ultimate toy for kids who love Monster Jam. With pull-back action, children can recreate thrilling stunts from the Monster Jam arena in no time. This 2-in-1 toy truck offers double the fun, with the ability to rebuild into a quad bike for even more high-speed adventures. Detailed with authentic graphics, colors, spikes, and a movable flag, this cool Monster Jam truck toy is packed with powerful features just like the real thing. The LEGO Technic universe gives young LEGO fans the perfect introduction to engineering and mechanics, where they can learn as they play. Kids aged 7 and up can power their truck and quad bike by simply pulling back and letting go. The Max-D model measures over 4 inches in height, 10 inches in length (with flag), and 4 inches in width. Get building with the free LEGO Building Instructions app, which includes an interactive guide for ease of use. This toy building kit is ideal for boys and girls who love exciting vehicles and offers a challenging and enjoyable way to learn through play.