16 grey anti-vibration pads for up to 2 compatible 12cm or 14cm fans Compatible with many popular Noctua fans such as NF-A14, NF-A12x25, NF-S12A or NF-F12 series (see Noctua.at website for detailed compatibility info) Pads minimise the transmission of minute vibrations while maintaining full compatibility with standard fan screws and most other mounting systems Dark-grey design goes nicely both with black industrialPPC or chromax line fans as well as with grey redux line fans (NF-P14s, NF-P12, NF-S12B) Trusted Noctua quality backed up by 6-year manufacturers warranty