Socket impact adapters are made of durable chrome molybdenum steel. Female to Male Driver Adapter Sturdy and reliable enough for all your related tasks Well-crafted for a longer life and perfect use These powerful impact adapter reducers are manufactured for use with impact drivers and most tools to convert driver size sockets in your setup. The heavy-duty socket drive adapter reducer has built-in ball detent locks designed to hold securely on sockets, preventing them from tipping over. The special chamfer design of the square female and male universal adapter has one main function, ensuring the fit through a through hole feature, allowing the use of locking pins and rings if required Set Includes 3/4" to 1/2" adapter, 3/4" to 1" adapter, 1" to 3/4" adapter, 1/2" to 3/4" adapter, 1/2" to 3/8" adapter, 3/8" to 1/2" adapter, 3/8" to 1/4" adapter, 1/4" to 3/8" adapter., Manufacturer: Yinyuan Tools