Wheelchair casters come in a variety of diameters and widths and each different style and size will have its own attributes that make it appropriate for different applications. The purpose of wheelchair casters is to stabilize the wheelchair while the drive wheels (powered wheels on a power wheelchair & large handrimmed wheels on a manual wheelchair) propel the wheelchair.
The wheelchair casters are usually located at the front of the wheelchair but on wheelchairs where the drive wheels are in the center or front of the wheelchair the casters are usually located at the rear of the wheelchair.
