1,Made of alloy material, strong and durable, and has a long service life 2,Accurate cutting and production, to meet the requirements of machines and equipment 3,Alloy material provides high strength and good durability, and anti-corrosion, can be used in harsh environments 4,The product has a wide range of uses and is suitable for many areas, such as carving machine 5,The extendable and clamping function is good, very practical , and the small size is convenient for storage 1 x Shaped Extension Rod Item Type: Shaped Extension RodMaterial: AlloyHeight: 1.38inNut: ER11 refers to the international standard, which holds the ER11 collet, the clamping range of the collet is 1-7mmHole Diameter: 3/4 in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.