Box and Open Ended Wrenches

These tools are used for loosening and tightening fasteners such as nuts and bolts. They come either separately or in a combination form, with one end being an open wrench, while the other is boxed. The box end has a tendency to slip off, while the open end allows more versatility since it needs only to contact two sides of the nut or bolt.

Figure 11 - Box End Wrench

Figure 12 - Open End Wrench

Figure 13 - Combination Wrench