Healthline's Tente Total Lock Casters measure 3" x 1" each. Contains four per set.
The caster system gives additional structural support to the wheelchair. With a total engaging lock to secure the wheel, making sure there is no swivel movement when locked. Allows for ease of movement on hard surfaces, and helps to prevent wheels from falling into cracks. Casters also have an easy reach brake tab.
Thread guards: Guards can be disassembled for cleaning.
Rubber tires: With soft non–marking gray rubber tires. Do not leave black marks or vinyl grooves.