Impact sockets and sets are for use with impact power tools that can apply more torque than hand drive tools in loosening and tightening fasteners. Bolt extraction impact sockets can remove stuck, rounded, and rusted nuts and bolts. Flex impact sockets are hinged in the middle to access fasteners in tight spaces while nonsparking impact sockets are for use in locations where flammable vapors or combustible liquids are present. Specialty impact sockets are for tightening and loosening nonstandard fasteners.