Casters (Set 4)Locking for MJM Height Adjustable Shower Chair Scooter Accessories DETACHABLE DESK ARMS * 18 17170 DETACHABLE DESK ARMS * 18 With Elevating Leg Rests * Adjustable seat rail extension and extendable upholstery easily adjusts seat depth from 16 to 18 (patent pending) * Removable flip back desk arms allow for easy transfer * New frame style eliminates seat guides and allows for custom back inserts and accessories * Tool free adjustable front riggings (footrests legrests) * Composite Mag style wheels are lightweight and maintenance free * Precision sealed wheel bearings ensure long lasting performance and reliability * Dual axle provides easy transition of seat height to hemi level * Desk arms are detachable * 8 front casters are adjustable in 3 positions * Push to lock wheel locks * Overall height: 35 * Seat to floor height: 17 Heat resistant up to 134° C MJM's Exclusive Reinforced Caster System Allows Additional Structural Support To Our Entire Product Line Our Positive Engaging Lock Holds The Wheel Securely So There Is No Swivel Movement When Locked * The Unique Design Allows Easy Movement On Hard Surfaces And Helps Eliminate the Wheel From Falling Into Cracks * Soft Non Marking Tread * (It Will Not Leave Black Marks Or Leave Groves In Wood Or Vinyl) * Quite Mobility * (Hard Treads Make A Lot Of Noise) Non Rust Plastic Body And Wheels * High Load Capacity (160 lbs) Non Slip Tread * Double The Tread Surface For Superior Breaking * Easy Reach Brake Tab * R 3TW 3 TWIN