Our impact socket adapters undergo rigorous testing to ensure optimal performance and durability. Why Choose Our Impact Socket Adapter Set?. Manufacturer Part Number: Impact Socket Adapter Set Unit Quantity: 1.0 count Tools Included: Adapter,1/2"F to 3/8"M,3/8"F to 1/4"M,1/4"F to 3/8"M,3/8"F to 1/2"M,1/2"F to 3/4"M Size: 5pcs cr-mo,1/4"F to 3/8"M,3/8"F to 1/4"M,1/2"F to 3/8"M,3/8"F to 1/2"M,1/2"F to 3/4"M.