Features:Grinding head using natural diamond powder， high hardness， wear resistanceHandle adopt high-grade stainless steel， high strength， no rustySpecifications:Materials: Stainless Steel + Diamond PowderSize: 42 x 7 x 30mmSpecific models: BR-30C DI-SS41， TR-11， TF-21EF， CR-22FPackage included:50 x Dental Diamond Burs