Experience the thrill of building with this lot of 210 blue K'NEX rods, perfect for creating your own roller coaster or other exciting rides. The pieces are made of high-quality plastic and are compatible with K'NEX sets. Each rod measures 2-1/4" in length, making them standard K'NEX parts. The set is recommended for ages 5 and up, and is perfect for both beginners and experienced builders. Get creative and let your imagination run wild with this bulk lot of K'NEX rods.