Mechanism for Daylight and blackout roller blinds up to and including 120 cm in size, incl. roller blinds Day-and-Night with sizes up to 160 cm, maximum fabric height - 250 cm. Made of ABS plastic and MABS from LG (Korea). Suitable for steel, aluminum pipes with a diameter of 17 mm. Installed without drilling and with drilling. The shaft of rotation of the springs of the mechanism is lubricated to prevent heat from friction.