Problem solving made fun! This exciting marble rolling game is both educational and fun, even parents like to sit down and help build new marble tracks. Hardwood blocks with grooves amp holes are combined in a variety of ways with the end result of 6 marbles ringing the bell to signal success. Large construction set with 26 beech wood pieces. Includes 6 glass marbles. Packed in a cardboard box. Clean with dry cloth. Marble ball track for beginners. Includes large ramps, ramps, rectangular blocks, square blocks, redirection blocks, columns, dominoes and 6 marbles. Made of untreated beech wood. Wipe with dry cloth to clean. Not intended for use by children under three years old. Small parts may pose a choking hazard. Large Ramps 12.5 in. Ramps 6.25 in. Rectangular Blocks 3 x .75 x .75 in. Square Blocks .75 x .75 x .75 in. Redirection Blocks .75 x .75 x .75 in. Columns .75 x 3 in. Made in Germany Ages 3