Manual tools can be classified according to their use into wrenches, pliers, screwdrivers, measuring tapes, hammers, sockets, cutting tools, scissors, tool sets, and auxiliary tools such as tool carts. Each category has different models.
Wrenches include open-end wrenches, double-ended box wrenches, ratchet wrenches, combination wrenches, pipe wrenches, T-handle socket wrenches, cross-head socket wrenches, and adjustable wrenches;
Pliers include wire cutters, needle-nose pliers, diagonal cutting pliers, retaining ring pliers, slip-joint pliers, water pump pliers, pipe wrenches, and locking pliers;
Screwdrivers include slotted, Phillips, Pozidriv, hexagonal, and Torx types;
Sockets are divided into standard sockets, Torx sockets (E-type sockets), driver sockets (BIT sockets), spark plug sockets, and impact sockets. Common sizes include 1/4", 3/8", and 1/2" (inches); each size also has 6-point and 12-point versions;
Hammers include claw hammers, machinist's hammers, ball-peen hammers, rubber hammers, and assembly hammers;
Cutting tools include files, diamond files, sheet metal shears, aviation snips, utility knives, square tube saws, pipe cutters, and bolt cutters;
In terms of materials, there are chrome vanadium steel, carbon steel, alloy steel, etc.
