Feng Shui- 5 Coins Knot Tassel w/ Endless Mystic Knot - #Tl003 Feng shui 5 coins tassel coin size is 20mm. Length approx 9 material : satin red tassel The Mystic Knot is one of the most often used symbols in feng shui. Being a combination of six times the infinity symbol, this feng shui knot symbolizes a long and happy life full of good fortune hang it anywhere at home or work except for back door.