4pack swivel caster wheels (0.5 inch) compatible with electric heaters, oil heater accessories, and small furniture. Wheels are molded from durable PP with reinforced metal components and use a butterfly nut for quick installation without additional hardware. Key benefits Smooth 360degree mobility: Full swivel action lets you reposition heaters and lightweight furniture easily around tight corners and narrow hallways. Quick, toolminimal installation: Butterfly nut attachment allows fast assembly and removal without extra parts. Durable construction for daily use: PP wheels and metal reinforcements resist wear and stand up to regular movement on hardwood, tile, and carpet. Stable support and floor protection: Balanced wheel design reduces wobble and minimizes scratches or scuffs on flooring. Compact, versatile size: The 0.5 inch casters are designed specifically for electric heaters and other small pieces, making them ideal for appliances and light furniture. Common applications Add mobility to an oilfilled radiator so you can move it between rooms as needed. Convert a small coffee table, plant stand, or shoe cabinet into a movable unit for easier cleaning and room rearrangement. Use on lightweight workbenches, bookshelves, or heater accessories to simplify repositioning and maintenance. Installation and use notes Attach each caster using the supplied butterfly nut; tighten securely before use. Intended for lightweight items and daily repositioning; confirm fit and stability with your specific heater or furniture model. Suitable for use on hardwood, tile, and carpet surfaces when properly installed.