Mould King 840PCs Hydraulic Excavator Building Set - 1:30 Scale Functional Engineering Model with Working Boom & Bucket, STEM Construction Set for Teens 14+ & Beginners Product Feature: New Excavator Model Kit: The Mould King Excavator engineering building blocks set authentically mirrors real excavator mechanics. Features include a detailed cockpit, multi-joint mechanical arm, and reinforced treads for lifelike immersion. Versatile Engineering Digger: Innovative quad-track chassis with knob-driven putter systems enables four actions: lifting/lowering the body, cabin rotation, multi-stage arm extension, and shovel articulationrecreating real digging operations at your fingertips. Smart Assembly: 840+ precision-engineered blocks come in numbered packs with color-coded 3D instructions. Perfect for ages 14+ to develop STEM skills or adults seeking an immersive 4-6 hour assembly challenge. Combines achievement and entertainment seamlessly. Durable ABS Materials: Made with high-quality ABS blocks, the building blocks ensure longevity and reliability. Smooth edges, tight connections, and wear-resistant tires ensure long-lasting play and repeated rebuilding. Exquisite Gift Box Packaging: This excavator toy building set is packed in a colorful cardboard gift box, which is high-end and atmospheric, and is the perfect gift for birthdays, Graduation, Christmas, Halloween, Thanksgiving and New Year. Product Specification: Item Dimensions: 13.62 x 5.98 x 8.62 inches Number of Pieces: 840 You Get: 1 x Mould King 840PCs Hydraulic Excavator Building Set Before you place an order, please provide me with English information to facilitate our delivery and logistics