Door handle set with reinforced transmission mechanism. - The handle maintains the aesthetic design of the DELTA window handles and cremone handles. - Spring-operated system with maximum recovery. - The handle is ambidextrous and is supplied with a zinc-plated steel square 8 x 129 mm. - The base of the transmission mechanism allows the fixing of up to 4 screws with double positioning each. - The base of the transmission mechanism has been reinforced through its manufacture in zamak, giving greater hardness and resistance to the base.