"Swivel 4 caster with 4 x 2 urethane wheel, total locking brak
"Rigid 4 caster with 4 x 2"" urethane wheel."
Rigid 4 caster with 4 x 2 solid steel wheel
Rigid 4 caster with 4 x 2 moldon rubber wheel
Rigid 5 caster with 5 x 2 moldon rubber wheel
Swivel 4 caster with 4 x 2 moldon rubber wheel
Swivel 5 caster with 5 x 2 moldon rubber wheel
Rigid 6 caster with 6 x 2 moldon rubber wheel
Swivel 4 caster with 4 x 2 Phenolic wheel
Swivel 8 caster with 8 x 2 Mold-on rubber wheel
Swivel 6 caster with 6 x 2 Mold-on rubber wheel
Swivel 4 caster with 4 x 2 steel wheel
Swivel 4 caster with 4 x 2 urethane wheel
Rigid 8 caster with 8 x 2 Mold-on rubber wheel
Rigid 4 caster with 4 x 2 phenolic wheel
