Features: Brand new and high quality Educational STEM Toy for Kids: Good choice for kids who loves building and science. Fun and entertaining, these tank kits will create an enjoyable learning experiences and great satisfaction building their own electric motor kits. Create a circuit and let the fun begin! Learn about Power&Wireless Control: Build a off-road tracked tank. Your child will explore the fun with this kits. Learn about circuit, engineering, energy conversion and much more. Easy to Assemble: Our science toy include all the tools and materials you need to assemble No electric soldering iron, no soldering, simple assembly, suitable for kids. Great Family Bonding Time: Perform rewarding science experiments with your family or friend. Perfect gift for kids teens. All wood block are made of real wood without chemical finishing. Safe, non-toxic and non-irritating. 5 Type to Choose: Type1: Remote control is not allowed, turn on the switch and tank keeps running; Type2: Can remote control tank go forward and backward; Type3: Dome top, can remote control tank go forward, backward and turn; Type4: Flat top, can remote control tank go forward, backward and turn; Type5: No remote control, can patrol the black line and drive along the black line only. Specifications: Material: Wood Color: As Pictures Show Style: Type1/Type2/Type3/Type4/Type5 Finished Size (Approx.): Type1/Type2-190x120x90mm/7.48x4.72x3.54in Type3-190x140x95mm/7.48x5.51x3.74in Type4-190x130x95mm/7.48x5.12x3.74in Type5-190x140x90mm/7.48x5.51x3.54in Weight (Approx.): Type1-198g Type2-216g Type3-358g Type4-375g Type5-261g Package Includes: DIY Wood Kits Science Experiment Electric Off-Road Tank Building Project for Kids (5 Style to Choose) note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!