Feature: 1. Fast and efficient polishing, 2. Remove stains from teeth, dental resin, porcelain, etc., 3. Prepare surfaces for sealants and orthodontic procedures, 4. Each nylon bristle can produce a brilliant luster, 5. Lock in type (RA), disposable design, 6. Only applicable for professional dental applications, 7. Packaged in a transparent box for easy storage and carrying. 100% brand new, of high quality! Material: The metal is made of copper, and the colored parts are made of nylon. Color: Colorful. Size: 30mm(1.18in) /28mm(1.10in). Model: Lock type tablet/bowl. Used for: cleaning and polishing. Packaging: 100PCS disposable dental polishing brushes.