PDEEY tongue cleaner is a great tool. It leaves your mouth feeling fresh. It's the final step to keep your breath from any tastes or odorsIt works by deflecting the water jet down onto your toun thus rinsing as you ‘scrape’. you can use it not just on toun but also the inside of cheeks. It is not too so of daging your mouth. patible with k Aquarius/Portable Water Flosser Oral irri Fit ModelWP-100 WP-100W WP-108 WP-112 WP-250 WP-260 WP-300 WP-440 WP-450 WP-462 WP-660 WP-662 WP-462 WP-670 WP-672 WP-676 WP-811 WP-861W WP862W WP-900 WP-940 WP-950 WP-952 DS-600W VA-EB006 Spoon shape,with smooth ed,and of daging your mouth Total length is 4.2 inch e with 3pcs tongue cleaner tip attachment heads.