Function and Type Key Ring
Key Ring is used to tighten or unlock the bolt or nut-shaped hexagon (hexagonal). This key size typically has a combined metric sizes (in mm) 6-7, 8-9, 10-11, 12-13, 14-15, 16-17, 18-19, 20-22, and 24-27. Locks of this type with the construction of twelve angles (eye) allows can be used in a limited space. Because the walls are thin, the key ring can be used at the position where the wrench can not be used. Similarly, wrench, key ring is also made of high tensile steel is an alloy of chrome vanadium metal, with cicin dimensional hexagonal or more in diameter aperture therein. This key is stronger and lighter than a wrench and provides cangkraman the whole head bolts.