DescriptionThis engraving conversion sleeves are made of good quality material, with heavy duty construction to ensure maximum efficiency. Not easy to deform and wear, it can be used for a variety of engraving machine tools, handy and flexible. Suitable for professional and personal use, easy to install and dissemble.Features- Color: Silver. - Material: Manganese steel. - Size: About 2.28X0.60X0.40cm/0.90X0.24X0.16inch. - Made of high-quality and environmental-friendly material, durable and practical for long time use.-With high-precision clamping force and good clamping stability, easy installation and simple structure.-Has good flexibility and abrasion resistance, with great processing and fine making.-Suitable for boring, milling, drilling, tapping, engraving, spindle machines and other processing.-Commonly used for engraving machine spindle motor clamping tool, used with engraving machine chuck.