These Micro Knex Track Fluorescent Green 180 Degree Curved Pieces are part of the Thrill Rides product line by K'NEX. Made of durable plastic, these coaster parts are designed for ages 8 and up. The set includes 2 pieces, each measuring 180 degrees, and comes in a polybag packaging. Perfect for building roller coaster tracks with the K'NEX brand, these green pieces offer endless creative possibilities for young builders and enthusiasts. Made in China, these parts are compatible with other K'NEX products for a seamless building experience.