Casters (Set 4)Locking for MJM Height Adjustable Shower Chair Wheelchair Transport Intelect© Transport Ultrasound * Fully 10883 Intelect© Transport Ultrasound * Fully functional 1 and 3 It truly is a safe welcome mat for any home * Beveled Edges * Allows cross traffic access and provides an attractive finished look * Indoor and Outdoor Use * This durable mat can withstand harsh weather conditions and high traffic use * Anchoring hardware is included * Made in the USA and carries a lifetime warranty * Usable Size (L x W x H) 14 x 36 x 1 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