Features: Universally computer case fan screws (4 pack) with multi device, ideal for securing fans in PC builds, cooling systems, and hardware upgrades. Durability 1022 carbon steel/stainless steel construction with nickel plated finishes offer rust resistance and 4.8+ strength rating, available in black/silver to matchs various PC aesthetics. Essential for DIYer PC builders, gaming enthusiasts, and technicians needing reliabled mounting solution for 30-120mm+ fans in rigs or maintenance projects. Perfect for vibrations sensitive installations like high performances cooling arrays or quiet PC builds, featuring auto tapping designs for tool friendly fastening. Optimize fan stability with included washers and length option (7mm/10mm), using diagonal tightening methods for secure, long lasting component fixation in any orientation. Specifications: Component: ABS Color: Black Weight: 100g Size: Approx.5x4x4cm/1.96x1.57x1.57inch Package Includes: 4PCS Metal PC Fan Mounting Screws note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.