Product Description : All burs are on a 1.6mm shaft dental diamond bur, diamond bur supplies, diamond burguarantees an extremely homogenous,safe and lasting diamond coating of the instrumentswork great on PFM, chrome & ceramic materials,ideal for shaping and gross reductionExcellent abrasive capacity & life. Long service life and high cutting capacity when preparing and separating porcelain, facing composites and model materials