This product is a set of four pieces of HO scale curved track, with a 1/3-22" radius, made of nickel silver and manufactured by Atlas in 2020. The track is pre-built and ready to use, with an analog control system and a two-rail system. It is recommended for children aged 14 and up and is graded as C-10 Mint - Brand New. The track is designed for use with model trains and is suitable for both boys and girls.