Features Wired Remote Control Drive: The 3D wooden crane model is driven by wired remote control, which can start and stop freely. It features a dual suspension point and dual viewing hole design. Fixed Pulley Drive: The crane model puzzle is driven by a fixed pulley block, and the lifting effect is achieved by the tower crane's own structure and traction rope. Can Be Used Multiple Times: This 3D wooden crane puzzle is made of high-quality composite wood, the puzzle parts can be spliced multiple times, not easy to break, and can be played many times. Puzzle Game: Assembling this set of 3D wooden puzzles can enhance children's basic scientific knowledge, improve hands-on ability and imagination, and stimulate interest and curiosity. Perfect Gift: This DIY Crane Puzzle Kit is the perfect gift for kids. After safety testing, all wood blocks are made of solid wood, without chemical treatment, safe and reliable, creating a safe entertainment environment. Specification: Item Type: Wooden Crane Model Material: Composite Wood Power Supply: Remote control (2 x AA battery, excluded) Uses: Handmade, puzzle teaching Package List: 1 x Remote Control 1 x Worm Gear 1 x Motor 1 x Motor Clip 1 x Hook 1 x Nut 1 x Cotton Thread 1 x Major Axes 2 x Middle Axes 2 x Short Axes 3 x Belt Pulley 1 x Gearwheel 12 x Axle Sleeve 28 x Screw 1 x White Glue 1 x Screwdriver 1 x Sand Stick 4 x Board Note: Designed for children ages 6‑14. The moment they open the package, children will absolutely love it. For children younger than that, they need to be accompanied by an adult to play such puzzle toys. Package List 1 x Remote Control 1 x Worm Gear 1 x Motor 1 x Motor Clip 1 x Hook 1 x Nut 1 x Cotton Thread 1 x Major Axes 2 x Middle Axes 2 x Short Axes 3 x Belt Pulley 1 x Gearwheel 12 x Axle Sleeve 28 x Screw 1 x White Glue 1 x Screwdriver 1 x Sand Stick 4 x Board