Features: Carbon steel galvanized is used to ensuring the durability and corrosions resistance of the fence in various environments. The unique square tube reinforcement design enhances the stability and load bearing capacity of the overall structure. Effectively prevent pets from loosening or collapsing fences due to impacts. The buckle connection systems allows for quick installation and removal without the need for tools. The fence layout can be flexibly adjusted according to space requirements. Not limited to pet fences, it can also be used for various purposes such as home partitions and garden guardrail. Specifications: Component: Galvanized Carbon Steel Inner Diameter: 15x15mm(0.59x0.59inch) / 20x20mm(0.79x0.79inch) Package Includes: 4PCS Fixed Buckle 1Pair Gloves 2PCS Small Wrench 4PCS Anti-Scratch Strips note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.