Hammer is important tools to tap, move or deform object, the most commonly used to knock nails, correct or knock the object. It is indispensable during installing or disassembling, mechanical work is also often used. Hammer has a wide variety of forms, common form of the handle and a top-edged. The top side of the hammer is used to tap, the other side is handle. Hammer shape can be claw, may be wedge-shaped, and its function is to pull out nails, it is also has a round shape. It can also be a tip-type, such as chipping hammer.
When we use the hammer, handle and hammer connected firmly, if your hammer handle has splitting and cracks, they can not be use. In order to have a certain flexibility when hitting, the middle of the handle is slightly narrower than the end place. When using a sledgehammer, must pay attention to the front and rear, left and right, up and down, avoid injury to people.