ITEM NAME:5pcs Beehive Gate Gate Plastic Bee Apiculture Equipment Nests Gate Description: Great tool to avoid bees to escape. Made of plastic material, light weight and portable. The yellow section can be moving when it is pushed to both sides that the door is opening or pushed to the center it is closing. Easy to use and operate. Install it on the beehive's nest gate Specification: Material: plastic Size: approx. 313×40mm/12.32* 1.57 inches (L*W) Length Yellow section: approx. 98mm/3.86inch; Thickness: 9mm/0.35inch Drilling hole diameter: 3mm/0.12inch Package Includes: 5 Pieces Beehive Entrance Spacer SKU: ALU0019632479006043.Install it on the beehive's nest gate. 5 Pieces Beehive Entrance Spacer. Made of plastic material, light weight and portable. Material: plastic. The yellow section can be moving when it is pushed to both sides that the door is opening or pushed to the center it is closing.