Available in sets of 2 (Sx2) or 5 (Sx5) including screws and a tool-free mounting system that can help reduce turbulence noise, Noctua NA-FG1-12 kits are premium quality 120mm fan grills for maximum acoustic optimization and ease of installation. Thanks to a staggered design with round struts, the NA-FG1 protectors offer excellent support with minimal impact on fan acoustics. The included toolless pressure pin mounting system not only makes installation a breeze, even if the fans are already installed in a PC system, but also introduces an additional 5mm disengagement space to achieve even lower inflow turbulence for greater smoothness. Last but not least, the high-quality matte black finish and the Noctua logo in the center make the NA-FG1 grids a visual testament to Noctua's renowned premium quality.