Made of electroplated corundum and iron, this carving drill needle ensures long-lasting performance. The tartness and uniformity of the electroplated corundum particles enable faster and more efficient grinding. Simply attach the carving drill needle to a punching machine, and it is ready to be used. The design and ergonomic handle provide comfort and ease during operation. Designed for deep holes and hollowing out jade, this tool is perfect for achieving precise and intricate carving. It is recommended for use with a punching machine and requires water cooling for optimal results. This tool allows for grinding into the inner gaps of the workpiece, making it suitable for materials like jade, gemstones, and . It offers fine sand abrasive, resulting in quick and tart grinding for a smooth and polished finish. Product Name: Carving and lengthening punching needle rod; Material: Electroplated corundum + iron; Size: As Picture Shown; Color: Silver; Package Contents: 1 Engraving punch needle or 7 Engraving punch needle ., Weight: 0.01763698096 Pounds, Manufacturer: Prterver