Features: 100% brand new and high quality. 1. This replacement brush head is made by the Yunchi brand and is compatible with Oclean X/X PRO/Z1/F1/One/Air 2/SE Sonic Electric Toothbrush. 2. Each package is independently sealed. 3rd generation Dupont bristles, comfortable deep cleaning of teeth. Specification: Type: Electric toothbrush heads Color: as shown Size: 3.1 inches * 0.79 inches Package includes: 10 electric toothbrush heads Notes: 1. Due to different monitors and light effects, the actual color of the item may differ slightly from the color shown in the picture. 2. Please note that manual measurement will cause a measurement deviation of 1 mm/0.39 \"-3 mm/1.18 \". We strive to provide you with excellent customer service. No matter what problems you encounter, our professional team will do their best to solve them for you and ensure you have a pleasant shopping experience.