Perfect Configuration: To make the room full of rainbows, with multi-faceted to reflect lights, reflect to rainbows that are form with the sun give a great light show, just use our K9 20pcs * 0.8"/20mm crystal ball prism. K9 Advabced Materiall: The crystal ball prism uses K9 advanced material, K9 material has higher refractive index and stronger transparency, without any lead, cute design crystal prism balls as brilliant a prism of color as the flat crystal, super twinkling and more clarity. How To Use: It has a small hole at the top, you can use a rope, fishing line, nylon line or dental floss to pass through the hole and hang it up anywhere to decorative, when sunshine through it will make and blast rainbows. Multi Function: Nice for Home Office Garden Window, Feng Shui Crystals, Chandelier Crystal Parts, Wedding Decoration, Christmas Tree Decor or any crystal projects. Good for sun shine catcher as a house, garden and car, It's also fun to turn these to enhance a new light fixture very pretty on your christmas tree, party decoration, DIY chandelier and more, get an amazing light & color show! Brand Guarantee: MerryNine product's packaging using Brand advanced packaging, perfect gift for your choice.