The product is made of high quality metal and has high hardness. It is suitable for long-term use and will not affect the accuracy of work. Extended straight handle, the handle is long. Suitable for deep hole machining to solve the need for deep processing extension. To reduce the use of extended tools, reduce processing costs, improve efficiency The various details of the product have been carefully processed to ensure the stability and accuracy of the product. The length of the extension rod and other parts are precision ground to eliminate the imbalance and improve the safety during cutting. size: Inner hole: 5MM Length: 35mm Material:metal colour:Silver Package Contents: 2 x Chuck Holder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.