Straight slip joint pliers are very common in North America and are often included in pre-packaged tool kits. They are configured similarly to common or linesman pliers in that their jaws are in line with their handles. One side of the pliers usually has two holes that are connected by a slot for the pivot. The pivot is fastened to the other side and shaped such that it can slide through the slot when the pliers are fully opened.
On water pump or channellock type pliers the jaws are set at a 45 to 60 degree angle to the handles. They usually have longer handles in comparison to their jaws than other pliers to provide better leverage. While the mechanism for changing sizes also requires fully opening the jaws of these pliers, they usually have more different pivot positions. The most common size is about 250mm from nose to the end of the handles and adjusts from 0-50mm jaw size