Pro's Combo I™ Blood Pressure Monitor, 1 Each Wheelchairs Power Replacement Caster 3 x 149 Replacement Caster 3 x 1 1 4 * HD Casters Have Threaded Stem For Extra Security And Safety * All Single Wheel Castes Come With Removable Bolt And Locknut Allowing Disassemlby For Easy Cleaning And Removal Of Build Up Grime Thread Or Anything Else That Your Wheel Picks Up During Normal Usage * This Caster System Will Add Longevity To Your Casters * Swivel: Double Ball Bearing With Hardened Raceways For Extra Strength * Cover: Helps Protect Swivel Bearings * Construction: Heavy Guage Cold Rolled Steel Formed For Strength Optimal dorsiflexion adjustment for custom stretch * Maximum comfort for enhanced compliance * Easy to use flexible hinge design and soft pliable softgood * Cloth liner is removable and washable * Optional toe assist strap secures toes within forefoot area * Ideal for Plantar Fasciitis * Fits left or right foot 804 gauge with integral bulb and trigger style air release valve for one hand convenience color matched dual pocket carry case