Feather flag base- Weighting ring is made with high quality plastic. Needs to be filled with water in order to reach maximum weight of 10 kg. It’s recommended to be used with feather flag base as small cross base, large cross base, square base, large square base. The feather flag base -weighting ring is perfect when some bases are too light to be exposed on wind. Feather flag base- weighting ring provides more stability of masts used externally. Weighting ring it’s a perfect solution for those who occasionally want to expose feather flags outside and do not want to invest in additional base dedicated only to external conditions. Caution! Please note that frozen water expands its capacity. Cannot be used in temperatures below 0°C.