A lever
increases the force that can be
applied on an object, the longer the
crowbar handle the more force can be
applied with less effort.
The
illustrated
NorthernTool.com
rolling head / drift pry
bar is an excellent combination of
two different tools. The
rolling head design allows access to
tight quarters and the drift allows
greater force to be applied when
trying to align two holes such as
leaf spring to mount.
A
gooseneck pry bar is another example
of a dual head pry bar.
Typically these type are referred to
as a wrecking bar. The curved
end head allows for force to be
applied at a 90 degree angle.
