Adopting high quality bearing steel, durable and long life Includes 1 wrench and 7 screw dies It can improve the efficiency of wire processing , a necessary tool for hand tapping operation With this set of dies and screw wrenches, thread processing will become easier and more precise Ideal for processing of threading and tapping in machine manufacturing Description: This set of dies and screw wrenches is a general tool for hand tapping. It includes 1 piece wrench and 7 screw dies. Adopting high quality bearing steel, which is durable and has a long service life. With this set, the processing of external threads will become easier and more accurate. Specifications: Condition: Item Type: Adjustable Wrench Set Material: Bearing Steel Thread Type: Coarse Thread Screw Die Pattern: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5, M12 x 1.75 Key: M25 Quantity: 8PCS Package weight: approx. 290g Package includes: 1 x Wrench 7 x Screw Dies Note: Please allow 1-3mm error due to manual measurement. Thank you for your understanding.