ER-40 Chuck Shank #40 NMTB Taper 10Pcs Spring Collet Chuck Tool Holder with Box Fit for CNC Engraving Machine and Milling Lathe Tool

Product Material: Made of alloy steel; great processing and fine making compatible with durability and toughness. | Main Parameter: ER40 clamping range: 2-26mm; Spindle Drawbar thread: 5/8"-11. Accuracy: 0.0005inch. | Collet Sizes: 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1 inch. | Wide Application: The collet chuck holder for professionals and hobbyists demanding milling and drilling applications. | Package Contents: 1 x #40 ER40 Collet Chuck; 1 x Wrench/Spanner; 8 x ER40 Collet Set.