Concrete mixers with Diesel engine and 4 pneumatic wheels. Capacity 350L. Designed and built to solve the problems of traditional mixers, the Syntesi R, Syntesi 350RS, Syntesi F, Syntesi 350 LA and Workman II 250-350 are fitted with two or four pneumatic wheels for displacement. The worm screw tilting system protects against accidental overturning of the drum and reduces effort, while the gearbox warrants maximum silence.