1. Carbon Steel: Forged with carbon steel, this hook wrench is exceptionally robust and wearresistant. It undergoes frequency hardening and a black oxide treatment, resulting in hardness and durability. 2. NonSlip GripThe handle of this wrench is coated with red rubber for a comfortable grip and force transmission. The ergonomically designed handle ensures a secure and nonslip hold. 3. Versatile Use: This hook wrench is specifically designed for driving hex socket head screws, threaded rings, and shafts. Its precise fit reduces the risk of damage to shafts, nuts, and housings. 4. Wide ApplicationCompatible with ER lathe collet nuts, CNC milling chuck nuts, and most tool holders—including spring collet nuts and CNC tool holders—this wrench serves a variety of purposes. 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. Sold by-DIMEANI official store