1. Dentistry-Diamond Burs (1) Natural diamond powder has high hardness and can ensure the sharpness of the needle. (2) High technology is adopted to fix the diamond powder without the whole piece falling off, which can ensure the durability of the needle. (3) High-precision program-controlled lathe is used for processing, so that the handle body has highly prepared coaxiality and size. No swing is generated, thus being convenient for doctors to operate and not damaging the axis and bearing of the mobile phone. (4) The handle body is made of high-grade stainless steel with high strength and no rust. (5) Maximum allowable rotation speed. 450.000 rpm. 2.Model and specification: (1)Description of model suffix: No suffix is common model, the end of "C" is coarse sand, the end of "F" is fine sand, and "EF" is extra fine sand. (2)Green is coarse sand, blue is standard sand, red is fine sand, and yellow is extra fine sand. 3.About package: (1)Package include:10pcs/pack (2)Handle diameter:1.6mm (3)Package details:1pack All the pictures were taken for real products without any modification and beautification. If you become a follower of mine, you can enjoy an extra 1% discount.