The Sandman is a wide handled Laser engraved Raking pick.
It works in a very similar action to the twin or triple peak rake lock pick.
Its used in a fast skipping action under the pins but there is nothing wrong with using it as a rocker.
It design allows for it to be reversible.
The Single Peak Side is designed for High/Low pinning.
These locks often also have two pins that are also close.
The 2,7 being the high/low and the 4,3 being the similar