Specifications:Material: Stainless Steel + Aluminum AlloyColoring Process: Anodic OxidationScale: 1/10Number of Parts: 500+pcsDrive Mode: Motor DriverExternal Power: DC 5V (USB Cable)Battery: 450mAh Li BatteryCharging Time: 2hService Time: Over 90mins (At Full Power)Assembling Time: 6hDegree of Difficulty: ★★★★★  Product Dimensions: 20 x 17 x 18cmProduct...

Features: 1.Exquisite mechanical ornaments: This is a mini overhead valve inline four-cylinder diesel engine model designed with ingenuity. The high-quality and textured metal parts bring you everything in an immersive environment. Knowledge about the wonderful world of mechanical engineering;2. Simulation dynamic model: The engine...

Features: 1. Origin of the story: The birth of the single-cylinder engine: In 1860, Edian Leroy invented the first usable internal combustion engine. However, the internal combustion engine as a practical transportation power device was completed 16 years later by the German engineer Otto....

Features: 1. Product material and workmanship: The product is made of metal, precision casting with CNC technology, oxidation of aluminum alloy, and exquisite workmanship at the level of collections of handicrafts. The 217 parts are all exquisitely polished by professional grinding tools, which perfectly...

Features: 1. Product material and workmanship: The product is made of metal, precision casting with CNC technology, aluminum alloy oxidation color, and exquisite workmanship at the level of collectible handicrafts. The 325 parts are exquisitely polished by professional grinding tools, which perfectly interprets mankind's...