The Grand Gemini Speaker Stands weighs around 13.6 KG (total), and this helps to maintain stand balance and stability. Also, it can adjust to seven different heights. High-pitched drivers of the monitors can aim to the listener easily. Weight limit per stand is 15KG.
Direct extension from top to the ground helps reduce resonance and maximise the benefits that bookshelf monitors can bring.
There are seven different height settings from 81 to 111cm. According to different seating positions and  distance to the speakers you might have, Gemini can be adjusted to provide for your best listening position.