A ratchet wrench includes a handle including a head including a circular pocket, an internal arcuate recess communicating with the pocket, a circular flange on a lower portion of the pocket, and a C-shaped groove on an upper portion of the pocket, the groove having both ends terminating at the recess; a detent including an arcuate block including an arcuate wing plate extending from one end, and a spring loaded pawl movably seated on the wing plate and besides the arcuate block, the pawl including pawl teeth facing the pocket; a hollow, cylindrical socket rotatably seated on the flange and including external drive teeth on an outer surface, the drive teeth being disengaged from the detent, a toothed drive surface on an inner surface, and a central opening defined by the drive surface; and a split ring mounted on the groove to retain the socket in place.