there are totally 10 pieces of 10 frame plastic queen excluders in the package, these queen excluders come in versatile yellow, enough to meet your beekeeping use and replacement needs Plastic Material: the queen excluder for 10 frame hive is made of plastic material, lightweight and flexible, will not break, rust or rot easily, reliable and safe for bees, can serve you for a long time Size Information: the queen excluder 10 frame measures about 20.08 x 16.54 x 0.12 inch/ 51 x 42 x 0.3 cm, can perfectly fit the 10 frame bee hives; Flexible and durable plastic frame allows you to freely cut to fit your own bee hives