DC20 and DC22 cut of saws with disc capacity with 450 and 500 mm, for cutting reinforced concrete asphalt and building materials in general. DC20 and DC22 are ergonimic and lightweight has an unbeatable weight/power ratio, hydraulic operation is a guarantee of maximum safety, no electricity therefore impossible to cause electric shocks, no fumes and emissions, minimum noise, vibration and maintenance, reliability, long service life and possibility of work in any position or condition and can also be used in submarine work.