Durable and rust resistant, made of s. Easy installation without tools, no drilling, no dirt. Strong magnetism with strong adhesive force. Multiple magnets needed to attach a window grid. Number of magnets depends on the size of the window. Wide application: suitable for insect screens in kitchen, office, living room, children's room, workshop, etc. Color: White. Material: Plastic. Size: 7.8cm. Package Contents: 22 x Adhesive Magnets. Only the above package content is included; other products are not included. Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3cm. Please pay attention to the size and dimensions of the product to ensure it meets your needs. Detailed product information, including features and specifications, is provided in the title and description.