E Z Transfer Slider Foam Cush w Removable Pommel 18 x16 Sharps A Gator Disposal System Replacement Caster 4 *Twin Procedure Mask Ultra Pleated Replacement Caster 4 *Twin Wheel Casters Have Threaded Stem For Extra Security And Safety *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) *Quiet Mobility (Hard Treads Make A Lot Of Noise)*Non Rust Plastic Body And Wheels *High Load Capacity (160 lbs) *Non Slip Tread Rail to minimize reaching and twisting for toilet paper * Install Yourself * All HealthCraft Removable pommel controls sliding and facilitates transfers * Comfortable foam padded pommel maintains pelvic neutrality * Keeps legs in abduction * Velcro© attached pommel removes for easy transfer * May be used with or without wheelchair cushion * Covered in wipe clean nylon * Fits 16 to 20 wheelchairs