●Product Name: Straight collet chuck; Model: ER11A; Effective length: 5.9 inches (150 mm); Handle: C12 ●Long Shank: The long shank fits deep shank solves the needs of expanding the processing depth ●Applications: Metric connection screws that can be applied to a variety of milling machines. Hardened precision grinding for improved machining accuracy ●【Material】Made of metal material, sturdy and durable, stable and reliable ●Package Contents: 1 x straight collet zipper