Usage: This wrench is open ended on one side and boxed on the other, also known as a combination end wrench. The boxed end is much stronger than the open end and will not flex apart when applying a lot of torque. Box ends can be 12 or 6 point, remember the 6 point is much stronger and will not allow the wrench to slip off or around the nut or bolt.
Open End Angle Wrench
Usage: The angle to this wrench allows access to hard to reach bolts and nuts.
Adjustable / Crescent Wrench
Usage: Adjustable wrenches are used when availability of an end wrench is limited or not available. Pipe wrenches are used on pipes and other round objects that need to be tightened or loosened.