Looking for a fun & education activity for your kids? Do you want to help your little engineer enjoy endless hours of building fun? The wooden excavator kit is designed to introduce air pressure system and simple machine in a hands-on manner. The wooden model with 3 replaceable 3 gripper & digger teach children about how lever and linkages work. Once made, the models may inspire kids to design machines of their own, and make connections with the engineering of the full sized machines we see on construction sites. I have a dream to be an Engineer! Features Recommend Age: 8+ Material: Real Wood Playtime: About 60 minutes 3 IN 1 STEM Wooden Excavator Kit This wooden puzzle excavator are made of high quality wood,Very good hand feeling without bad smelling.The puzzle is rigidity and not easy to cutting your hand.Making puzzle toy by self is a specail experience.They will feel a great sense of accomplishment when you finished the puzzle peice by peice.It also excise kid hand-on ability and brain using skill.Stem toy is the best gift for all ages kid.No matter boy or girl. Great toys for any occasion-school classrooms, Makerspaces, Montessori, daycare, library ,home or office. Easy Self-Assembly-Don't worry that the assembly of the wood kit is too difficult. Just follow the assembly instructions and build it step by step. You can make it done. Keeping the kids off computer or mobile-It offers hours of fun activity that keeps the kids away from smartphones and tablets so that they can benefit from productive play. More Details 3 Replaceable Gripper & Digger The grab stem toy has 3 different mode head to switch.3 different replaceable head give you different playing experience,its very cool and fun. Amazing Air Pressure System This wooden puzzle use the disposable syringe to achieve air pressure effect. 6 syringe are like human joint to finish any movement. Best Holiday Craft Gift Our DIY car 3D wooden puzzle will be a very attractive decorations when you put it in the Bookcase,Display Cabinets etc. All kid love building thing no matter what ages or gender. Building thing are specail funness. Mini Tudou 3D Wooden Puzzle (Excavator Set) Mini Tudou 3D Wooden Puzzle (Solar Car Set) Dinosaur Race Track Construction Track Mini Tudou 12 pcs Safari Animals With Large Mat Mini Tudou 12 pcs Safari Animals Age 3+ years 3+ years 3+ years 3+ years 3+ years 3+ years Educational Objective hand-on ability & intelligence & motor skill develop hand-on ability & intelligence & motor skill develop hand-on ability, intelligence & problem solve skill develop hand-on ability, intelligence & problem solve skill develop creative,imaginative,hand-on ability, knowledge of safari animas creative, imaginative,hand-on ability, knowledge of safari animas Material wood wood ABS plastic ABS plastic ABS plastic & soft non-woven fabrics ABS plastic