Features: Brand new and high quality Food grade plastic material, safe to use. Stability, good corrosion and abrasion resistance, extreme weather will not be damage and deformed. Plastic Beehives entrance reducer is small and lightweights The mouse guards maintain a stable temperature inside the Beehives; it can control the speed of in the beehives, avoiding too fast or too slow in to have a negative impact. Our Beehives entrance can adjust size of the opening as need, which is more convenient and flexible. Simple and easy installation without any tool or expertise. Can be placed directly of the beehives. It can also be mounted on the Beehives with screws. Specifications: Material:Plastic Size:37.5cm/41cm/45.0cm Package Includes: 1x Beehives Entrance Reducer note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.