This 1" anvil is designed specifically for use with the IR280 and IR290 impact wrenches. It is made from microcut materials to ensure durability and longevity. The unit is sold as a single piece, with no warranty included. This anvil is ideal for automotive and air tool applications, and is compatible with a variety of other accessories. With its high-quality construction and precision engineering, this anvil is sure to provide reliable performance for years to come.