The two-tone marble set from Hubelino adds colourful elements to existing marble runs. With a diameter of 24.5 mm, the twelve included marbles roll reliably through the track elements. Each marble features a two-tone design, combining yellow with blue, green, or red. This accessory is ideal as an addition or replacement for the Hubelino marble run system. The marbles are compatible with building blocks from other well-known manufacturers and offer children aged 4 and over varied construction and playtime fun. Made in Germany, they impress with precise workmanship and stability.