Four-piece internal filler set for 6.25U and 7U spacebar keycaps — designed to improve cavity acoustics and reduce hollow or rattling sounds. Key benefits Better sound quality: Fills the internal cavity of 6.25U and 7U spacebars to reduce resonance and produce a more solid, consistent tone. Easy installation: Each set includes four components that align with standard satellite stabilizers for straightforward placement inside the spacebar keycap. Flexible compatibility: Designed for use with PCB-style satellite stabilizers, and can also be adapted for steel plate satellite shafts or modified by tailoring to fit non-standard setups. Problem solving: Eliminates common spacebar issues such as excessive hollow echo and uneven vibration without requiring major keyboard modification. Important attributes Function: Internal cavity filling for spacebar keycaps to improve acoustic performance. Compatibility: Specifically fits 6.25U and 7U spacebar keycap interiors; intended for use with PCB satellite stabilizers; adaptable to steel plate satellite shafts or adjustable by tailoring. Quantity: Four components per set for a complete spacebar fill. Performance: Reduces unwanted resonance and rattling, yielding a clearer, more controlled sound from the spacebar. Practical use scenarios Custom keyboard builds: Add this filler set when assembling a 6.25U or 7U spacebar to achieve a more refined, less hollow sound profile. Upgrading a stock board: Install the components inside an existing spacebar with PCB satellites to reduce rattling and improve typing or streaming audio quality. Modding older keyboards: Adapt the pieces to steel plate satellite shafts or trim them to fit irregular cavities when retrofitting sound improvements on vintage or nonstandard layouts. What to expect Four-piece set intended for internal placement in 6.25U or 7U spacebars. Straightforward alignment with PCB satellite stabilizers; adaptable to steel plate satellites or by tailoring for specific needs. Noticeable reduction in hollow resonance and improved overall spacebar acoustics without invasive changes. Compatibility reminder Designed for 6.25U and 7U spacebar keycap interiors. Works directly with PCB satellite stabilizers; may require adaptation for steel plate satellite shafts or custom-fitting through tailoring.