The Thick Square Coaster Molds with Matching Holder Mold is a set of silicone molds designed for crafting purposes. The set includes one piece with dimensions of 3.5 x 3.5 x 0.39 inches, making it ideal for creating a variety of crafted projects. The molds are specifically crafted for resin projects and are durable and high-quality, ensuring a smooth and detailed finish to your creations. The matching holder mold also allows for easy storage and organization of your finished coasters.