Features 1、Made of high-quality 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 Specification Item Type: Shaped Extension Rod Material: Alloy Height: 1.38in Nut: ER11 refers to the international standard, which holds the ER11 collet, the clamping range of the collet is 1-7mm Hole Diameter: 3/4 in Package List 1 x Shaped Extension Rod