Types of spanners:

There are many types of spanners.The most common are the ring spanner,Open end spanner,the combination spanner.the spanner will only do job properly if its the right size for the nut or the bolt to be turned.

The size used to describe a spanner is the distance across the flats of the nuts or bolts to be turned.There are two system in common use,metric ,in millimeters,and imperial,in inches.each of the system has a range of spanner especially made for each one.

These are some of the spanners shown in images.