Specification: Type: Replacement Toothbrush Heads Suitable For: Philips Age: Adult Material Composition: ABS Plastic + DuPont Bristles + 304 Stainless Steel Comfortable Premium and Durable: Feel the difference of genuine premium DuPont bristles. Which care for teeth and gums, gives you a deep cleaning and easily removes 7X more plaque than a manual toothbrush. Independent Packaging & Hygienic Cover: Each toothbrush head is Independent sealed-packed and comes with a dust cover cap. It is hygienic enough. You can share with your friends and travel whenever you want. Screw-on system fits: Advance, CleanCare, Elite, Essence and Xtreme Brush Handles.As long as there is an e-series, it can be used. Suitable for common Philips models HX5 series: HX5100/HX5251/HX5451/HX5581/HX5751 HX7series: HX7001/HX7351/HX7361/HX7551/HX7553 HX9series: HX9552/HX9553/HX9842/HX9882 Other series: Advance e-4000/Essence e-5000/Elite e7000/e9000/Xtreme e3000/E and X series Package Included: 1Pc or 2Pcs or 4Pcs x Replacement Toothbrush Heads Note: 1. Please allow 1-3 cm measuring deviation due to manual measurement. ( 1 inch = 2.54 cm ) 2. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you