Best Assembly Difficulty

Yamix Full Metal Engine Model Desk Engine, Unassembled 4 Cylinder Inline Car Building Kit Mini DIY Toy for Adults

...o a power system through a specified kit or DIY modification.
Assembly fun: the original product requires the user to assemble the parts and components. The whole process is close to the professional assembly line process. After assembly, it takes more than 4 hours and the difficulty level is 4.5 stars. It is interesting and full of experience. Product Dimensions: 15.4 x 12.2 x 18.6cm.
Power: In order to make the product easy to operate and no harm to the product, use electric motor instead of traditional gasoline, lithium battery capacity 500MAH, running at full power for no less than 30 minutes.

【6-in-1 Science Kit】 This STEM toys can be assembled into 6 different types of robots. While assembling exercise children's hands-on ability, and let children have a deeper understanding of space solar energy through assembly..
【STEM Projects for Kids Ages 8-12】Space toys robot kit can also be an educational toy. It can cultivate children's judgment and logical thinking skills in the DIY process, can also collaborate with a team of friends to build a robot to promote the growth of children in all directions..
【Solar and Battery】This robot toy has two power supply methods, solar power and battery power. Solar energy can only operate by collecting solar thermal energy through solar panels. The battery drive can be easily used indoors and outdoors..
【Easy to Assemble】 The enclosed instruction manual has detailed assembly steps to help children assemble. Each kind of assembly has different difficulty, which can exercise the child's patience and practical ability..
【Awesome Gift】Non-toxic materials make it safer and more secure, Very suitable science kits for kids age 8-12 birthday gifts or holiday gifts..

Directly printing inductor traces on the PCB board greatly simplifies the difficulty of assembly..
The kit uses a band-pass filter, 3355 high-amplifier, NE602 mixing, MC1350 mid-amplifier solution, which can receive AM signals of 118-136MHz..
12V power supply, 9.2 x 7.5cm PCB board size, which can be directly used in 97 x 40 x 75mm aluminum chassis.
The AGC circuit on the board ensures comfortable listening, while the squelch function avoids long-term noise..
It is specially used to receive the call between the aircraft and the tower. With the antenna with good performance (VHF band Yagi antenna), the open area can receive various types of aircraft and tower calls within about 190Km. Please pay attention to your favorite friends..

The SNAP is a high-quality split 75% keyboard kit with tons of room for customization.
Use the SNAP together, or separate! It snaps together for a traditional 75% layout or pulls apart for use as a split board.
Built around a Pro Micro, rather than a discrete microcontroller. This saves assembly time, and also reduces the build difficulty.
All required parts (diodes, caps, and ICs) are through-hole, meaning they're easy and forgiving to solder.
RGB underglow ready: 10x optional bottom-mounted SMT LEDs shine nicely through the acrylic support material. RGB underglow is supported natively in QMK, allowing for easy programming and configuration.

...st hardware. Easily adjust the magnetic resistance to customize your workout to your needs.
FLUIDITY FLYWHEEL SYSTEM: The smooth magnetic-encased flywheel system is powered by a computer, making it reliable. Select one of the 8 preset levels of resistance depending on difficulty desired.
OTHER FEATURES: This unique and compact fitness glider comes with 3 different sets of integrated handlebars to choose from: U-shaped (with heart-rate monitor system), dual action (traditional elliptical style), and wraparound (at base of seat). Assembly Details: Adult Assembly Required.
PERFECT FOR HOME GYM: Because it provides so many workout possibilities, it is perfect for your home gym setup. The transport wheel makes this machine portable and easy to store when not in use.

The NIBBLE is a high-quality 65% keyboard kit with tons of room for customization.
Built around a Pro Micro, rather than a discrete microcontroller. This saves assembly time, and also reduces the build difficulty.
The NIBBLE has more programmable keys than a standard 65%, and allow for multiple layouts.
All required parts (diodes, caps, and ICs) are through-hole, meaning they're easy and forgiving to solder.
RGB underglow ready: 10x optional bottom-mounted SMT LEDs shine nicely through the acrylic support material. RGB underglow is supported natively in QMK, allowing for easy programming and configuration.

Reliable Quality: Made of eco-friendly plastic, processed by smooth polished and softly rounded edges..
Specification: Normal state: Width: 32cm.
Function: It can encourages you to imagine, explore and learn while having fun..
Perfect Gifts: The building block set is a perfect Christmas, birthday or festival gift ..
Tips: The assembly difficulty level is high, so the novice is not recommended..

... mini chandelier fixture. The clear polyhedral crystals on the mini crystal chandelier soften the light and cast different light patterns. This is definitely the perfect choice for your home lighting decor..
【The fun of hands-on assembly】 This crystal chandelier has no difficulty in assembly, we have carefully recorded an assembly tutorial video to help you complete the assembly easily. You will be able to have a crystal chandelier assembled by yourself, come and experience this sense of accomplishment!.
【Worry-free Service】We promise 100% return and refund policy for crystal chandeliers that meet the standards. If you have any suggestions and questions. Please do not hesitate to contact us..

ARROWS Hanayama is 5 piece Cast Metal, Take-Apart, Brain Teaser Puzzle. Bundled Items. Ages 13 to 105 years..
ARROWS Hanayama consists of 4 arrows locked within a heart-shaped piece..
The objective is to remove all four arrows from the heart. Even more challenging is the re-assembly. A tricky puzzle..
Rated as a level 3 difficulty, (on a scale of 1 to 6 where 1 is easier and 6 most difficult). Your experience could differ..
Bonus soft red, velveteen drawstring storage pouch. Measures approximately 4 x 3 inches. Bundled Items..