Petrol DOHC engine ¼ cutaway model (IVDB01-Q)
•	DOHC twin overhead camshaft
•	4 valves per cylinder
•	Piston with the rings
•	1 cylinder
•	The cutaway model on aluminium base
https://automotivetrainingequipment.com/product/petrol-dohc-engine-%c2%bc-cutaway-model-ivdb1-4/