Fangrui Product Details Understand Engine - Assemble It And Know Engine Structure. Leaning Engine Theory - Learn How The Engine Works. Intake, Compression, Work, Exhaust. Logical Thinking - Assemble Accessories To Improve Logical Thinking And Hands-on Ability. Why Call It V8 - A Type Of Engine Has 8 Cylinder And Show Them With V Shape. Simulated Exhaust And Ignition - Engine Exhaust And Ignition Are Achieved By Air Pressure. We Simulate The Ignition Through The Valve Opening And Closing Process. Size:25cmx18cmx19cm Show Results: The Led Lights Up Emits The Sound Of The Engine And Turns Off After About 30 Seconds. Colour:as Shown Material:plastic Package Contents: 1 * V8 Engine Model Kit Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.