Impact sockets use impact power tools that rotate sockets to loosen or tighten fasteners. All purpose impact sockets turn fasteners in a variety of applications while bolt extraction impact sockets remove stuck, rounded, and rusted nuts and bolts. Flex impact sockets are hinged in the middle and can fit fasteners in tight spaces, while nonsparking impact sockets won’t spark during use. Specialty impact sockets are for use in turning nonstandard bolts and other fasteners.