This professional general purpose adjustable Block plane has a fine grey iron body and is adjustable for depth of cut and alignment.
A block plane is designed to cut end grain and is typically small enough to be used with one hand with the cutting blade (also known as an iron) bedded at a lower angle with the bevel up compared against other planes. It is frequently used for paring end grain, possible because its blade had been set at a shallow bed angle. This allows the blade to slice through end grain more efficiently; furthermore, for this to work, the plane is frequently held at an angle sometimes as much as 45° to the direction of travel, so that the cutting edge slices the wood fibers as they pass from one end of the cutting edge to the other.
A block plane has many other uses in woodworking, ideal for cleaning up components by removing thin shavings of wood in to make a component fit within fine tolerances. Chamfering (angling square edges) and removing glue lines are some of the other uses woodworkers find for the block plane.