The GOQI GQ-3053 Motorised V8 Engine is a 692-piece building set of a working V8 car engine with transparent cylinder covers, about 22 cm long. A built-in motor drives the crankshaft, so you can watch the pistons move up and down while the fans and pulleys turn. Specifications Brand: GOQI Item no.: GQ-3053 Pieces: 692 Assembled size: approx. 22 × 14 × 13 cm Material: plastic building bricks Functions: motor drives the crankshaft, pistons, fans and pulleys; transparent cylinder covers Recommended age: 8+ In the box Building parts for the engine (692 pieces) Motor and battery box Building instructions See how an engine works Building the engine yourself and then watching it run is one of the best ways to understand how pistons and a crankshaft work together. The transparent covers let you see the motion clearly, which makes it great for curious minds and STEM learning. Size and who it's for Assembled it measures about 22 × 14 × 13 cm, and the motor and battery box are included. A perfect gift for car enthusiasts, budding engineers and anyone who loves mechanical models that move. Recommended age 8+. See more in our GOQI collection. Switch it on for visitors and it is sure to start a conversation. Other GOQI sets are sold separately; see our GOQI collection. Mini V8 Engine Building Blocks – 502 Pieces Mechanical model building kit; simulated working mechanisms. PHOTOGRAPHED: smaller white box label GQ-3101; brand also marketed as STEMedu.