[Material] - The computer finger guard is made of metal, nickel-plated surface. It is rust-resistant and corrosion-resistant [Size] - Fit for fan size: 120mm x 120mm; Overall Size: 157mm x 157mm; Mounting Hole Distance: 105mm x 105mm(L*W) [Won't Block Airflow] - Hollow mesh design can prevent wires from entering the fan without affecting the heat dissipation effect [Applications] - This cooling fan grill can be used in computers, power supplies, 3D printers, projectors and other equipment to ventilate heat, and avoid fingers and cables from being twisted into the fan [Stable and Durable] - The protective cover can bear a tensile test of 90 pounds. 4 screw mounting holes, easy to install (Not included screws)