5pcs 1/4 1/2 ER16 ER20 Extension Chuck Rod Collet Engraving Machine Milling Tool

Features: Router bit extension rod + collet chuck kit for woodworking trimming milling engraving machine. Made of high-quality spring steel material durable and sturdy. The extension rod can eliminate the dangerous of withdrawing the shank from the collet. And extending the router bit to provide the full depth of cut. Make you work better safer more efficient and more labor saving. Specifications: Shank Diameter: 1/4 inch 1/2 inch(optional) Material: Spring Steel Item size: 6.35 * 22.2 * 85mm 6.35 * 28 * 85mm 12.7 * 28 * 85mm(1/2 inch) Color:silver and black(as picture show) Quantity:5pcs/set Package include: 5pcs Extension Rod Collet (as picture show) Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.