Trolley set for wooden sliding doors. Includes 4-wheel trolleys with ball bearings and all mounting elements. The mechanism allows height adjustment of ±5 mm and includes an anti-unhooking lock and a bi-directional soft-close system. In addition, the stop brake does not require machining prior to installation on the rail. The same mechanism works for both opening and closing. The parts are made of steel, plastic, and zamak, of proven quality. The model is available with a 80 kg load support. One unit is for one wooden door without track.