Sufficient quantities and proper combinations will satisfy your various DIY needs in daily lifeQuality material: these epoxy casting moulds are made of silicone material, they are lightweight, reliable and reusable, they can withstand temperature from minus 40 to 446 degrees Fahrenheit, you can use them compatible with a long time, and they are non-toxic, safe and tasteless, easy to clean with warm soapy waterSimple to use: our round and square resin moulds set has smooth interior, so they are easy to demould, you just need to put the required filler into the mould, wait a while until the resin is completely cured, and gently twist the mould to push it out without tearing easily, while maintaining the shape of the mouldSize of products: the diameter of round craft resin coaster mould is approx. 9 cm/ 3.54 inches, the size of the square coaster silicone mould is approx. 9 x 9 cm/ 3.54 x 3.54 inches, the round coaster holder silicone mould measures about 4 x 10.5 cm/ 1.57 x 4.13 inches, and the size of rectangle coaster storage box silicone mould is approx. 4 x 7 x 10.5 cm/ 1.57 x 2.76 x 4.13 inchesMultiple applications: these epoxy casting craft moulds can be applied to create many projects from home decorations to jewelry designs, such as cup mats, coasters, agate coasters, bowl cushions, telephone holder trays, candle holders, handicrafts, jewelry storage boxes, and so onColour: transparent whiteMaterial: siliconePackage Contents:1 x round coaster box mould1 x square coaster box mould5 x round coaster molds5 x square coaster moldsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.