Variable Pin Spanner Wrench

spanner wrench
One of the most useful tools for engine repair. Not currently manufactured.

variable
something that is likely to vary; something that is subject to variation; "the weather is one variable to be considered"
(of a wind) Tending to change direction
(of a quantity) Able to assume different numerical values
Not consistent or having a fixed pattern; liable to change
a quantity that can assume any of a set of values
liable to or capable of change; "rainfall in the tropics is notoriously variable"; "variable winds"; "variable expenses"

pin
A thin piece of metal with a sharp point at one end and a round head at the other, used esp. for fastening pieces of cloth
a piece of jewelry that is pinned onto the wearer's garment
trap: to hold fast or prevent from moving; "The child was pinned under the fallen tree"
A small piece of metal or wood for fastening or attaching things, in particular
attach or fasten with pins or as if with pins; "pin the needle to the shirt". "pin the blame on the innocent man"
A small brooch or badge