K'NEX Typhoon Frenzy Roller Coaster Building Set Fat Brain Toys K'NEX Typhoon Frenzy Roller Coaster Building Set Fat Brain Toys Typhoon Frenzy Roller Coaster Building Set Amazon.com: K'Nex 51438 TYPHOON FRENZY ROLLER COASTER BUILDING SET K'nex Typhoon Frenzy Roller Coaster Building Set Shopee Philippines. With over 640 pieces including rods, connectors, 19 ft of track, motorised power and a silver coaster car, this awesome building set lets you create a cyclone of twisting roller coaster fun in your living room. Discover non stop action with this toy building set and download the exclusive instructions to build an incredible second model, the Tsunami Surge Coaster. With 2 models to build, kids and adults alike will enjoy hours of fun. This construction set helps strengthen fine motor skills, logical thinking and problem solving. Perfect for capturing kids interest in basic construction, science and design, while promoting concentration and logical thinking. Ideal for encouraging young children to build and create while developing an understanding of STEM subjects, these kids building sets are great for children aged 9 and up. A great birthday gift or Christmas present for everybody. This amusement park set is a great gift for children looking for new challenges. This 19 foot long roller coaster building set for kids opens the door for hours of creative design play.