Check the listing for details. GRAINGER APPROVED RI-03.01 Caster Lock Kit,Back 49C258. Condition: New. Listed at 29.39 USD. Caster Lock Kit, Directional Lock, Back, Directional Lock, Steel Directional-lock kits include the necessary parts for installing directional locks on compatible casters. Directional locks (also known as swivel locks) immobilize the swivel mechanism on swivel casters to prevent the casters from turning. When the locks are engaged, they temporarily turn swivel casters into rigid casters to prevent swivel casters from wandering and keep equipment stable as it's rolling along a straight path for long distances.Brake and lock kits for casters contain the required parts for installing wheel brakes, directional locks, or total locks on compatible casters. These products can help increase the stability of equipment and furniture as it's being moved or used. Brakes prevent caster wheels from rolli.