Hitachi 303044 SDS Plus 1/2-Inch Square Drive Adapter for 1/2-Inch Impact Sockets Ideal for home improvement projects Compatible with 1/2-inch impact sockets Special Direct System for improved hammer action Quick setup is intuitive and easy to use Comes with a 30-day limited warranty Well-built with a simple design Compatible with -Inch impact sockets Special Direct System for improved hammer action Quick setup is intuitive Comes with a 30-day limited warranty