Corded Drills, Drivers -Impact Grade Socket Adapter Highlights Generic Brand Impact Grade Socket Adapter Description: The socket adapter / extension set comes with three 6.35mm hex shank socket adapters (1 /4 in.), 3 inches long so you can turn any power drill into a power nut driver with the extra reach you need. The sizes included are 1/4 inch, 3/8 inch and 1/2 inch. Each adapter is made of heat treated chrome vanadium steel. Corrosion-resistant adapters are ideal for high-torque projects, helping to prevent socket breakage and stripping. The hex shank will fit all standard quick change systems and drill chucks. Package includes: 3pcs Socket Adapter Tip Note: Please allow slight errors in size caused by manual measurement. Please allow slight difference between pictures and real item due to different lights.