Collection: 100-200 usd

SEMTO ENGINE ST-NF2 7cc SOHC Inline 2 Cylinders 4 Stroke Air Cooled Nitro Engine Model Kit - FS-L200AC

V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine for Capra VS4-10

V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine Building Kit

Pumping Unit that Works - Pumping Unit Model Kit - TECHING Pumping Unit DIY Assembly 3D Metal Mechanical Puzzle Educational Toys Collection 219Pcs

V8 Electromagnetic Engine 5V 4W 8 Coils High Speed V-Shaped Automobile Engine Model for Gift Collection

Stirling Engine Kit Tractor Vacuum Engine Motor Model for Gift Collection - Enginediy

Labs Demonstration Motor Generator Activity Model AC/DC Generator Demo Kit for Student

TECHING Robotic Engine Assembly Kit Educational Toy Build Your Robot Kit DIY Gift 160pcs