Made of plastic material, these piggy bank stoppers are and reusable for long-term use. Lightweight, small in size, easy to use, and provides great coverage effect. It's smooth to the touch and will fit most savings boxes and other types of boxes. Features - Color: black. - Material: plastic. - Size: 4.50X4.50X0.90cm/ 1.77X1.77X0.35inch. - Inner diameter: 4.0cm. - Plastic material, safe, lightweight, suitable for most storage boxes and other types of boxes. - Stopper lids can help you with piggy banks without lids, and can also be used to protects or cover holes and protects the corners or edges of the box. - Easy to install, no tools required, just push it into the bottom hole of a plaster figurine or piggy bank. - Choose a plug with the proper inner diameter to keep the contents of the box from slipping. - Light weight, small size, easy to use, reusable, support long-term use. Package list: 20 x piggy bank stoppers