The MILWAUKEE SHOCKWAVE 3" Impact Duty Magnetic Bit Holder is designed to be highly durable and have a long lifespan of up to 30 times longer than other bit holders. It is made from a special Custom Alloy76 steel that has been heat treated to ensure optimal hardness. The magnetic bit holder features a powerful magnet that provides a secure grip and ensures that the bit stays engaged. Additionally, it has a C-ring that retains the insert bit. The bit holder has a 2-piece construction that is specifically designed to withstand the demands of tough jobsite applications. It is compatible with Milwaukee SHOCKWAVE Impact Duty Insert Bits. The bit holder's strong magnetic tip securely holds fasteners to the drive guide, while the C-ring keeps the insert bit in place. The Custom Alloy76 Steel used in its construction maximizes resistance to wear and shock. This bit holder is engineered to be extremely durable and is backed by Milwaukee's reputation for quality. It includes one SHOCKWAVE 3" Impact Magnetic Bit Holder and is part of the wide range of tools offered by Milwaukee.