If you are in the middle of a project that involves a lot of screwing and unscrewing bolts (such as installing hot tubs), then you probably want a ratchet socket wrench. This type of wrench can help you work bolts with ease and do it in half the time. Basically, a ratchet wrench automatically grips the bolt for you with each turn so that you don't have to move and replace the wrench each time you want to give the bolt another twist. Most socket wrenches come in two parts; the head and the handle. The head of the socket wrench can usually be switched out so that you can have an exact fit to your bolt, ensuring that you will be able to move it without stripping it.
With socket wrenches, the cheap option is usually not the best option. You see, socket wrenches operate using pins, which are like little teeth that help you grab your bolt. They are also the part of the wrench that makes that little clicking sound when you turn the wrench. The number of pins inside your wrench will determine how effective your wrench will be in tight spaces. If you have a small opening, you will probably already know to buy a small socket wrench, but you also need to check the number of pins to make sure that you won't be ratcheting for forever; if you can only turn your wrench three inches, then you will need a ratchet with a lot of pins so you can make the most of those three inches.