Collection: 100-200 usd

ENJOMOR Stirling Helicopter Model Kit Gamma Hot Air Stirling Engine Model DIY Assembly Model STEM Educational Toy

ENJOMOR Mini Beta Hot Air Stirling Engine Model External Combustion Engine Model Educational Toy

3D Metal Steampunk Craft Puzzle Mechanical Underwater Seahorse with Lamp Model DIY Assembly for Home Decor Creative Gift-2100PCS

Stirling Engine 2-cylinder Parallel Metal Bootable Model Micro External Combustion Engine Model

3D Metal Steampunk Craft Puzzle Mechanical Insect Model DIY Assembly Animal Jigsaw Puzzle Kit - Make Your Own Advent Calendar - Creative Gift-650PCS+

L4 Engine Model Kit - Build Your Own Engine That Works - Haynes L4 Engine Model DIY Kit

Starter Kit for TOYAN FS-L400 Engine

Starter Kit with 4-in-1 Ignition Module for TOYAN FS-L400 Engine