1The grinding head is made of natural diamond powder with high hardness and good wear resistance. 2The handle is made of high quality stainless steel with high strength and can withstand high speed. 3The maximum speed of green products is 450000 rpm/min. 4Stainless steel material, not easy to rust, sanitary. 5Different size grinding heads meet the needs of different tasks. Feature: The grinding head is made of natural diamond powder with high hardness and good wear resistance. The handle is made of high quality stainless steel with high strength and can withstand high speed. The maximum speed of green products is 450000 rpm/min. Stainless steel material, not easy to rust, sanitary. Different size grinding heads meet the needs of different tasks. Specification: Model: BR-30C Material: Diamond+Stainless steel Weight: 8g / 0.3oz Handle diameter: 1.6mm Product dimension: 42*7*30mm Package list: 10 * Dental Diamond Bur Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.