Compatible model This upgraded design is compatible with All electric toothbrushes as long as your metal shaft tip is as same as picture shown above, or please always check with us before purchase. for example: This model fits for regular models, and also for Diamondclean smart handel, and Brushsync toothbrush handles. Smart 9000/9500/9700/9300/6100/7500/9750/6500, HX9690, HX6817,HX9957, HX6800,HX9662, HX751x HX681x HX682x HX683x HX684x HX685x HX9690 HX9957 HX992x HX993x series. regular models: hx9340 hx9350 hx9360 hx9370 hx6720 hx6730 hx6750 hx6910 hx6920 hx6930 hx6950 hx6960 hx6970 hx6210 hx6530 hx6320 hx6340 The use of corrosion resistant rubber material can effectively prevent moisture and prolong service life We offer a complete tutorial, which you can find by searching for the keyword Million Magnets on Google or YouTube. If you have any questions, please feel free to contact us. We will be happy to serve you. Notes Any use of the Philips brand name, models names or parts designation for this product is made for reference and compatibility purposes ONLY. The Philips brand and , diamondclean model names is the registered trademarks of their respective owners. This is not an OEM products.Power source type: Battery Powered. This model fit for all regular models, Diamondclean smart handel, and Brushsync toothbrush handles. Smart 9000/9500/9700/9300/6100/7500/9750/6500, HX9690, HX6817,HX9957, HX6800,HX9662, HX751x HX681x HX682x HX683x HX684x HX685x HX992x HX993x series. This page sells upgraded rubber seal, please check at our store if you need regular model. This upgraded rubber seal only suits for demonstrated metal shaft above, if you have different model, please check with us before placing order. The old version of the rubber seal stores water in the groove, the rubber seal could get corroded and damaged, allows water seep into the handle over time, further damaging the motor and battery. This is an upgraded rubber seal based on regular model, we have improved its water proof performance and this generic design fits for both smart and regular handles.GTIN: 710654891588. Best Sellers Rank: See Top 100 in Health & Household. Number of Pieces: 1. Item Firmness Description: Soft. Age Range (Description): Adult. Material: Rubber. Brand: Million Magnets. : B08QZ61ZG1. Manufacturer: Million Magnets. UPC: 710654891588. Item model number: 4956305911. Product Dimensions: 0.47 x 0.35 x 0.08 inches; 1 Ounces.