Honey-Can-Do Shf-01939 4-Inch Caster Roller Wheels For Hcd Shelving Unit,, Black Scaffoldings, these days?you know how fickle them can be. One minute you?re rolling them down the floor of your basement or garage and the next minute, the wheels come off. That?s when this set of four 4? Caster Roller Wheels pull up to get your gear back in gear. Sure, they can screw right into any Honey Can Do shelving unit?but their universal design makes them ideal industrial wheels for furniture around your house or other rebellious scaffoldings. And because you like to be thorough, make sure to check the diameter of those holes prior to purchasing. Features-Brakes,Heavy Duty. 0% Fabric Made in the USA Replacement casters designed for Honey Can Do shelving units Includes two locking and two non-locking caster roller wheels Large caster wheels; maximum load capacity of 350 pounds Universal design; compatible with other furniture Locking casters wheels secure shelving units and more in place Threads on the casters are 3/8? x 16 UNC by 1? long Dimensions: 4? diameter