I couldn't find a combination of 1/4" and 5/16" ratchet wrench so I had to order one. It's not the highest quality wrench I've ever used, but it's good enough for its intended purpose of loosening 1/4" and 5/16" hex head screws in oven cabinets to remove flame sensors, igniters, mounting brackets, etc For example, the key has cranks, and the switching mechanisms are quite easy to use even in a small space.