Item Type: Shaped Extension Rod_x000D_ Material: Alloy_x000D_ Height: 1.38in_x000D_ Nut: ER11 refers to the international standard, which holds the ER11 collet, the clamping range of the collet is 1-7mm_x000D_ Hole Diameter: 3/4 in 1Made of high-quality alloy material, strong and durable, and has a long service life 2Accurate cutting and production, to meet the requirements of machines and equipment 3Alloy material provides high strength and good durability, and anti-corrosion, can be used in harsh environments 4The product has a wide range of uses and is suitable for many areas such as carving machine 5The extendable and clamping function is good, very practical , and the small size is convenient for storage1 xShapedExtensionRod