• SUPERIOR QUALITY: Made With Nylon Bristles With Rounded Ends And A Large Head!
• MODELS: This Toothbrush Head Is Specifically For Model Numbers: DiamondClean Smart HX9903/19, DiamondClean Smart HX9903/30
• TOOTHBRUSH HEAD STYLE: Premium Plaque Control
• SPECIAL FEATURES: This Toothbrush Head Offers Replacement Reminders When Used With A Handle That Supports Such Technology!
• QUANTITY: This offering Is For Two Factory Sealed Packs That Contain Four Toothbrush Heads In Each Pack - For A Total Of 8 Toothbrush Heads.
• INSTALLATION INSTRUCTIONS: Remove The Old Toothbrush Head, Open Packaging, Slide Your New Toothbrush Head Into Place. A Small And Necessary Gap Should Exist Between The Toothbrush Head And Handle.