The NA-SAV2 is a fan accessory set consisting of 20 NA-AV2 Anti-Vibration Mounts for up to five fans. Replacing standard fan screws, the NA-AV2 mounts allow for a convenient, quick and vibration-free installation of fans in standard case fan mounting holes. The double-side design makes the NA-AV2 easier to work with in space restricted environments and thanks to the use of premium grade rubber, these mounts are extra soft and highly tear-proof at the same time. Switching standard fan screws for NA-AV2 mounts can drastically reduce structure-borne noises and makes this set a perfect complement for Noctua\'s redux and industrialPPC fans!Features:- Reduces fan vibrations- Includes 20 mounts for five fans- Simple to installContents:- 20 mounts for 5 fansCaution: The NA-AV2 mounts are compatible with all Noctua fans as well as third party fans with open flange frames and standard 4.3mm diameter mounting holes.