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: 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: Borehole Diameter 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. Size: 60mm | Color: Bronze High-end zinc alloy desktop hole covers are an ideal solution for tidying up cables in the office, workbench or desktop to save space and look beautiful. Properties Color: Bronze Material: Zinc Alloy Drilling Diameter: 60 mm Outer Diameter: 68 mm Passage Opening: 20 x 20 mm Height: 12 mm Scope of Delivery 2 x Cable Desk Covers (Bronze)