Locking Casters (Set 4) for 7038 7049 & 7026 (MJM) Male External Catheters USB charging Endoscopy USB charging Authentic deep tissue massager originally designed for clinical use * Ideal for warming up muscles prior to Chiropractic adjustment * 8 massage spheres cover a broad area ideal for large muscle groups * A full body massage takes only 5 8 minutes * Designed to direct 95% of its energy into the patient 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 * Replacement Caster 3 * Twin Wheel Casters Have Threaded Stem For Extra Security And Safety