Material Selection: Round Cable Grommets are forged from strong zinc alloy, with good texture, anti-corrosion and anti-rust. The thickened material makes it durable and wear-resistant and not easy to break. One-Piece Molding: Built-in cable grommets use fine technology, one-piece molding, no splicing and durability. Special Situation: If you have a lot of cables, you can unload the black plastic circle in the middle, then enough space for you to use. Cable Passthrough Size: The borehole diameter 60mm, outer diameter 68mm, passage opening 20 x 20mm, height 12mm. Application Scenario: High quality design zinc alloy round cable grommets apply to your office table or desk and more. The hole covers high-end zinc alloy desktop are an ideal solution for storing cables in the desk, workbench or desk to save space and look good. Properties - Color: red bronze - Material: Zinc Alloy - Drilling Diameter: 60 mm - Outer Diameter: 68 mm - Passage opening: 20 x 20 mm - Height: 12 mm Scope of Delivery - 4 x Cable Desk Covers (red bronze)