Spare Part: for monitor upkeep, worn part replacement, or backup storage when you want spare components ready before the next maintenance task Practical Size Reference: 11cm / 4.33inch in length, giving you a size reference when checking the part shape needed for replacement maintenance or spare storage Clear Replacement Part Purpose: This 4 piece set replaces a worn or missing cuff inflation bulb assembly, helping keep your monitor ready for maintenance without replacing the unit Four Piece Backup Quantity: Four black replacement bulb parts give you spare pieces for monitor upkeep, part, or backup storage, so extra replacements stay organized and ready when needed Visible Bulb And Housing Structure: Each piece shows an oval squeeze bulb with attached housing and a connector tip, giving you a reference when comparing the part form you want to replace, Manufacturer: Woedpez