spanner consists of a ring- type head
with a square hole at the rear designed
to lock into various types of handle.
They are available in sets, offering a
range of heads, spacer drive bars and
handles. Sockets are generally required
when torque wrenches are used to tighten
nuts and bolts.
of this design Is the wheel nut spanner
which, in its simplest form, consists
of two double-ended socket and spanners
fixed together at right angles. Considerable
pressure can be applied with this type,
and care must be taken not to over-tighten.