["Electroplated Diamond 20-50mm Cone Chamfer Grinding for Head Stone Glass Chamfering for Head Sanding Tool Accessories\n\nDescription:\nbrand new and high quality\nFeatures:\nDiamond coated Taper Single type angle drills, use to machine chamfer hole of glass, stones etc.\nSuitable for use in grind the edge of glass, marble, rock, gemstone, jewelry, shells, tile etc.\nUse with water as a lubricant is better.\n\nSpecification:\nType: Cone Grinding Bits\nMaterial: Diamond\nApplications: Grinding \nFeatures: Cone Grinding Bits, Electroplated Diamond, Glass Chamfering, Chamfering Sanding, Tool Accessories\nDimension: \n20: app.2cm/0.79in\n25: app.2.5cm/0.98in\n30: app.3cm/1.18in\n35: app.3.5cm/1.38in\n40: app.4cm/1.57in\n45: app.4.5cm/1.77in\n50: app.5cm/1.97in\nColor: Silver\nQuantity: 1 Pc\n\nNote: \n1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\n2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 Pc x Cone Grinding Bits"]