The Mould King 10211 technical building kit replicates a detailed aircraft radial engine using 1147 clamping blocks. The model illustrates mechanical processes with moving pistons, a visible piping system, and a rotating propeller. The mechanics are driven by an electric motor with a start switch. Once assembled, the model reaches a size of 21.6 × 18.3 × 22 cm. Made from robust ABS plastic, this functional model is suitable for technology enthusiasts and aviation fans.