H D Metal Casters for #7026E (Set 4) Ultrasound Lotions Gels Accs Carton Shipping Weight 49 lbs Color:Yellow Carton Shipping Weight 49 lbs It only gives you the most reliable reading as to whether or not you have a higher blood pressure or lower blood pressure than the normal one 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