The 3-in-1 configuration is for heavier loads and allows for height advantages in applications that require it. For example, a 3-in-1 configuration with 6-inch-diameter wheels has a maximum capacity of 2,460 pounds per caster, and a 2-in-1 configuration with 10-inch-diameter wheels has a maximum capacity of 2,500 pounds per caster. While they achieve similar weight capacities, the 3-in-1 configuration is four inches shorter.