Casters only for 7038 Heavy Duty Set 4 (2 Lock 2 NonLock) Jobst for Men 20 30 Knee High * Durable Sail White high 16 7136 * Durable Sail White high pressure laminate 1 1 8 top is 72 x 48 O 5v Rechargeable battery or 2 C batteries * Replacement Caster 5 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