4piece replacement caster set for electric oil heaters — 1.5 inch wheels with 8mm threaded stems (black and white). Durable plastic hubs and PU treads for reliable, longlasting performance. Key benefits Restore mobility: worn or broken wheels to make your heater easy to move again without buying a unit. Secure fit: 8mm thread diameter provides a stable attachment to compatible heater legs or mounts, reducing wobble. Smooth, omnidirectional movement: 1.5 inch casters roll and swivel for effortless repositioning across rooms. Fast, tool swap: Simple pushin/pullout design lets you install or remove casters quickly for maintenance or seasonal storage. Features and specifications Quantity: 4 casters (black and white) Wheel diameter: 1.5 inches Thread diameter: 8 mm Construction: Robust plastic hubs with polyurethane (PU) tread for durability and consistent rolling performance Compatibility: Generalfit replacement for electric oil heater wheels with 8mm threaded mounts Why customers need this Solves common problems like stuck or broken wheels that make heaters hard to move. Extends the useful life of an electric oil heater by restoring mobility and stability. Makes maintenance simple and quick so you can keep the heater functional with minimal downtime. Typical applications Move a room heater between living spaces for targeted warmth. Ease cleaning and storage by rolling the heater into a closet or garage during offseason months. Transport a heater safely when traveling or relocating between homes. What to check before Confirm your heater uses 8mm threaded caster mounts. Verify the 1.5 inch wheel size fits the clearance and support requirements of your heater. Practical, reliable replacement casters that restore maneuverability and make maintenance quick and simple.