HIGH QUALITY MATERIAL: This Moving Sand Art is made of high quality glass+solid wood frame; Lead-free high transparency glass as clear crystal as the water drop, 360° Rotate, allows you to fully enjoy the beauty of quicksand PRODUCT ADVANTAGES: 17.3'' Moving Sand Art's detail is fine, carefully screened sand, colorful, levels clearly demarcated, flow out of the pattern of 3D effect is excellent RELIEVE STRESS: The 3D Sand Painting has ever-changing picture, rich in content. Can relieve stress and eye fatigue USING RANGES: The Blue Moving Sand Art is just what you need to decorate your home or office! If you have a hard-to-buy-for friend or family member, 3D dynamic art quicksand painting would love to get one of these sand art pictures to enjoy! NOTE: Unfortunately, we can’t provide syringes and needles. Maybe you can buy it at a pharmacy. A small disposable syringe is enough. After receiving the moving sand art, if the sand flow rate is too fast, there is a small hole in the border of the sand painting, you can inject some air, if the flow rate is too slow, you need to extract some air, generally the height of the bubble is kept at 0.2-0.4inch , the sand flow rate is relatively moderate, which can form a wonderful pattern.