This Double Helix Coaster is equipped with two helix/spiral rails. One is a helix lift using a worm gear gearbox operated by hand crank or a motor to push many carts to the top continuously, another one is a helix slide rail for carts to coast down in a spiral. Both of them were built in the same tower just like the shape of DNA! 
 
The helix lift is safer, more reliable, and compact. The whole thing was built on two base plates only.

Key Features:

• Over 2100pcs
• Two Helix/Spiral Rails
• Elevator Mechanism
• Motorised Climbing
• DNA Shape
• Two base plates
• Detailed Surroundings & Buildings
• 55cm high
• Building Instruction Booklet Included

Shipping to United States:

- Standard Shipping for free, delivered by USPS in 14-18 days.
- DHL/UPS Shipping free at $100+ orders, delivered in 6-9 days.

Shipping to United Kingdom

- Standard Shipping for free, delivered by in 12-15 days.
- Express Shipping free at $100+ orders, delivered in 6-9 days.

Shipping to Australia and New Zealand

- Standard Shipping for free, delivered by in 13-16 days.
- Express Shipping free at $100+ orders, delivered by FedEx or DHL in 6-9 days.

Shipping to EU

- Standard Shipping for free, delivered in 15-21 days.
- Express Shipping is optional to buy, delivered in 6-9 days.

Shipping to Canada

- Standard Shipping for free, delivered by Canada Post in 15-18 days.

Shipping to Asian Countries

- Standard Shipping for free, delivered in 5-7 days.

Please see our Shipping Policy Page for more detailed shipping times by region.