- Easy to assemble and take apart various amazing marble tracks with complete accessories and guidance manual, steep ramp blocks and ladder blocks that speed up and slow down the ball, also added Pillar blocks make marble maze model taller, bigger and more fun - Kids need to think about the track direction, the shapes, and assemble it. Marble race track can develop your little logical thinking, creativity, spatial imagination ability, patience and problem-solving skills - With the marble run sets, boredom will vanish from your kid's life. Amaze your kids when the marble track will reach their hands. It's fun for the whole family and the perfect reason for getting together and spending quality time - Your kids will love playing with this roller coaster and you'll become their favorite hero for giving them this gift. Kids will enjoy hours of fun with our building toy set - We want to make sure to keep them safe during playtime. Smooth edges avoid scratching hands. Compatible with major brands blocks. Marble run building blocks set for boys and girls Model: A66166, Weight: 3.45 lb