Locking brackets for front swivel wheels ensure straight walking. They are easily unlocked for increased maneuverability. To combine the advantages of control and easy maneuverability, you can lock one side and unlock the other side. Locking brackets for front swivel wheels ensure straight walking|Brackets are easily unlocked for increased maneuverability|To combine the advantages of control and easy maneuverability, you can lock one side and unlock the other side|Easily attaches to safety rollers