- 1.9 mm/2.8 mm diameters. - Precision-machined and hand-formed from high-carbon Stainless Steel. - Tips are then hardened and hand-polished to achieve smooth, scratch-resistant surfaces that produce accurate and smooth restorations every time. - Standard universal handle has a 6.4 mm/1/4” diameter with a segmented knurled grip to provide excellent control with this slimmer handle design. **For further product information , please contact Chat Support**