1.Unique irregular edge round design, resin molds with different shapes. 2.Please keep the interior of the mold smooth and tidy before use. The smooth surface makes it easy to release after it is completely cured. 3.These resin molds are suitable for making decorative resin crafts, such as coasters, candle holders, wall hanging, agate pieces, etc. 4.Suitable to make your DIY craft gifts for your family, friends. Or enjoy the fun time with your kids. 5.Tips: After you used, wash them with soap water, let them dry out and keep them in flat, store in a cool place.