The Shadow Captive forks come with one set of washers featuring two different offset options, Offset directly affects the steering feel of your bike. For a more mellow feeling, you would want to choose the 32mm position, and for a more responsive or quick feeling, the 26mm position would be your choice.
As a general reference, 32mm would be used for high-speed trail riding, and 26mm would be for technical street. Assembly instructions included.