A 3/8″ drive ratchet in 1/4″ ratchet size format; The Nano 3/8″ head is 50% the size of the most popular 3/8″ competition and the same size as the 1/4″ drive; 72 tooth, 8″ long, quick-release socket retention, solid teardrop handle, full chrome polish finish; Exceeds ASME torque standards for 3/8″ drive tools despite its miniature size