Compatibility: Fits all Oclean models including Flow, X Pro, X Pro Elite, X Pro Digital, Air 2, and Endurance. Superior Plaque Removal: Featuring a diamond-shaped interface and a 1.4x grinding rate for deep cleaning. Removes up to 100% more plaque compared to manual toothbrushes with high-density tufting technology. FDA Approved: Made with FDA compliant materials and designed with a meniscus brush head for a comfortable and effective clean. The soft TPE back of the brush head won't injure your tongue. Trusted Brand: Recommended by dental professionals. Blue reminder bristles fade to indicate when it’s time for a replacement, usually every 2-3 months. Easily snaps onto the handle for a convenient click-on fit. Package Includes: 2 Professional Clean electric toothbrush replacement heads with a 2-year service guarantee.