5pcs Electric Toothbrush Replacement Heads Compatible with Fairywill Brush Heads FW-507/508/551/917/959,FW-D1/FW-D3/FW-D7/FW-D8 Safe Material Replacement Head: ABS food-grade safe material, high-quality Dupont nylon soft bristles. Turn right to unlock, easy to replace, without any additional auxiliary means, easy to use. Gentle yet effective cleaning: The innovative 3D cutting process allows each tooth to be cleaned in three dimensions. Unique W-shaped brush head design, denser bristles fit the topography of teeth, thoroughly clean gums and hard-to-reach areas. 0.152mm round bristles protect your teeth and gums from injury, safe and comfortable. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!