You'll notice that unlike other marble runs, Quadrilla marble railway sets are uniquely designed with level tracks. Speed results from the use of different connecting blocks and chutes! Each building block has a different function, and can direct the marbles to drop to a new level, go right or left, take a trip down a curved wooden track, or swirl and whirl down a funnel

This Quadrilla Marble Railway Twist Set includes 100 colorful swirl marbles with connecting blocks, accelerators, rails, and five hole covers. Instructions are also included to make three different marble run combinations.

Recommended for ages four and above. Designed in Germany.

Touted as the next generation of marble runs, Quadrilla marble railway toys are unique not only because of their highly innovative design, but because of their durable and high-quality wooden construction. Featuring real wooden tracks and colorful, rainbow-hued blocks, Quadrilla rail sets are heirloom wooden toys that are truly made to last a lifetime.

Specific accessories of the Quadrilla Marble Railway Twist Set include:

• 4 Orange Vertical Chute
• 4 Natural Vertical Chute & Drop Through Tunnel
• 5 Yellow Angled Chute
• 7 Red Alternating Angled Chute
• 7 Teal Angled Chute & Double Tunnel
• 8 Green Angled Chute & Drop Through Tunnel
• 6 Blue Angled Chute & Single Drop Through Tunnel

• 10 small red accelerators (1"" x 1/2"")
• 2 large red accelerators (1.5"" x 1.6"")

• 5 Curved Rail with 2 hole drops (1.75"" x 12"")
• 2 S Shape Rail with 3 hole drops (1.75"" x 20.25"")
• 6 Large Curved Rail with 3 hole drops (1.75"" x 22.25"")
• 2 Helixes (Spirals) 14.75"" long, 9.5"" diameter