Product Material Selection: Round Grommets are forged from strong zinc alloy, with good texture, anti-corrosion and rustproof. The thickened material makes it durable and wear-resistant and not easy to break. One-Piece Molding: The recessed 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 middle black plastic circle, then enough space for you to use. Cable Pass Size: The diameter of the drill hole 60mm, outer diameter 68mm, passage opening 20 x 20mm, height 12mm. Application Scenario: The round plastic pass high quality design zinc alloy apply to your office table or desk and more. The zinc alloy desk hole covers are an ideal solution for storing cables in the desk, workbench or desk to save space and look good. Properties - Color: Bronze - Material: Zinc Alloy - Borehole Diameter: 60mm - Outer Diameter: 68mm - Passage Opening : 20 x 20 mm - Height: 12 mm Scope of delivery - 2 x Cable desk covers (Bronze)