ITEM NAME:Corundum Grinding Wheel Diamond Drill Bit Sharpener Titanium Drill Powered Tool Descriptio n Description: Made of fine quality material, practical, easy to install and use, wide range of applications, it has a long service life. Features: Small and portable, easy to install and use. Made of beautiful ABS material quality, ergonomic design, has a long service life. Mainly used for grinding iron drills to improve the utilization rate of drills. Push the plastic cover to the left or right to replace the wheel. Specifications: Grinding wheel diameter: 25mm / 1.0in Grinding wheel thickness: 26mm / 1.0in No-load speed: 1500-3000 rpm Axial diameter: 6mm / 0.2in Scope of application: 2-12.5mm iron twist drill (2.0mm-5.0mm, 5.0mm-8.0mm, 8.0mm-12.5mm) Package Included: 1 * portable electric drill grinder Note: This product is only for the normal straight iron twist shank drill. It needs to be used together with an electric drill. We offer you what you need! Corundum Grinding Wheel Diamond Drill Bit Sharpener Titanium Drill.Mainly used for grinding iron drills to improve the utilization rate of drills. Grinding wheel thickness: 26mm / 1.0in. This product is only for the normal straight iron twist shank drill. It needs to be used together with an electric drill.