Socket wrench known as ratchet is a removable socket that fit of many different sizes of fittings and fasteners for nuts and bolts. The socket attach to the ratchet through a square fitting. The fitting contains a calibrated detent mechanism to lock onto socket. An American J.J Richardson of Woodstock, Vt who invented the modern socket wrench with interchangeable sockets while the tool was invented through the Scientific American Patent Agency. The first appearance of the tools issue by the Scientific American in April 16, 1864.
There are three types of Socket, the 6-point vs 12-point, shallow vs deep and Impact sockets. The 6-point vs 12-point is a modern nuts and bolts heads made with hexagonal gripping surfaces. A 6-point sockets offer a better grip on fittings and are less likely to slip and round off the corners with continued use and are generally preferred for damaged nuts and bolts. The 12-point sockets double the number starting positions and more faster while the 6-point socket are more secure. A good quality to choose is the 12-point socket according to the majority but for professional mechanics they prefer the 6-point socket. The Shallow vs deep refers to the lengths which is divided by manufacturers into two categories the standard and and deep. Standard is also known shallow sockets a lower profile and allow a user to access nuts in narrow spaces. The Deep sockets a useful turning nuts unto bolts when the bolt extends upwards into the socket if there is many bolted joints. The impact sockets is a high faster demands that require an impact or impact driver to deliver the amount of torque to tighten or loosen. It is made of a weaker but more malleable steel that will deform and split instead of shattering, such as chrome-moly or chrome molybdenum. It can used with hand-held drive tools but some users often attach them into pneumatic tools
