Colour:Iron-gray Material:Chrome vanadium alloy Package Contents: 4 x Impact Driver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. [High hardness and wear resistance] - The positioning pin and anvil are made of high-quality chrome-vanadium alloy steel, with a hardness of up to 60HRC, wear- and , bright as new, and never rusted. []-If you have someone around you who likes crafting or DIY, you will help free his hands with minimal cost, and the time-saving function will make people scream and [Stable and Immobile] - The new design and upgrade of the anvil assembly reduces the number of connection points. The connection hole with strong magnetic , 0.4inch wide tail diameter and 0.2inch deep groove make the operation more stable and not easy to fall off. [All-round application]- The power tool replacement anvil is compatible with conversion heads such as hexagonal shank, hole saw, drill bit, socket, etc., to meet the needs of drilling, screwing, wrench and other scenarios, and it is more powerful than the version. [Precision Forging]- Dozens of tests and experiments have been carried out on the basis of the components to solve better compatibility, while to surpass the functions.