The diameter of entry port is 10mm, ideal for sealing 14/16/18 gauge cord, braided cable, and flat wire. Designed to keep cord connections secure and protected. Compact size and lightweight design help protect outlet, plug, socket, and connection points from hanging in the air. Features a snap-lock lid and rubber gaskets, providing IP44 water resistance. Constructed from heavy-duty reinforced PP material to withstand rain, snow, water, dust, dirt, and other environmental factors, offering continuous protection for outdoor electrical connections. Easy to use: place the connection into the safety seal enclosure and secure the cord with the built-in clamps. To hang the cover, use the included cable ties and insert them into the side mounting holes. Suitable for a wide range of outdoor and indoor applications including lawn tools, Christmas lighting, landscape decorations, pool pumps, fountains, fish ponds, patio heaters, air conditioners, security cameras, and more. Size: 21x7x7cm Color: Green Material: PP Style: A Note: This extension cable box is not compatible with power strips, right-angle plugs, or large adapters. Package Contents: 2 * Extension Cable Plug Connection Protective Safety Cover Only the above package content is included; other products are not included. Note: Light reflection and different display settings may cause slight color variation between the image and the actual item. Measurement allows an error of +/- 1-3cm.