Locking Casters (Set 4) 3 x 1 1 4 H D Threaded Stem Wheelchairs Accessories Constructed of solid hardwood and Detergents Constructed of solid hardwood and finished with a lacquer * Features 36 steps at 1 1 4 intervals for upper extremeity exercise * 58 long x 1 3 8 deep x 2 1 2 wide * Shipping Carton Size: 57 x 3 x 3 13 cm * Shipping Weight 114 lbs 52 kg * Adjustable U base Replacement Caster 3 x 1 1 4 * 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 * HD Casters Have Threaded Stem For Extra Security And Safety * Construction: Heavy Guage Cold Rolled Steel Formed For Strength * Total Lock Caster Both Swivel And Wheel At The Same Time * Operates With A Simple Tap Of The Toe