Vistro Office Chair Caster Wheels Rubber Furniture Caster Pack Of5

Type: Twin Wheel / Double Wheel Caster.Mounting Style: Threaded Stem (features a bolt-like top with an integrated hex nut for tightening).Material: * Wheels: High-density Nylon or Polypropylene (standard for hard floors/carpets).Stem: Zinc-plated steel or Stainless steel.Color: Matte Black.Swivel: 360-degree rotation capability.ntegrated Hex Nut: Allows for easy installation and tightening using a standard open-ended wrench.Dual-Wheel Design: Distributes weight more evenly than a single wheel, reducing floor wear and increasing stability.Hooded Housing: The black plastic "hood" protects the swivel mechanism from dust and hair buildup.Usage TipsHardwood Protection: If you are using these on delicate hardwood floors, ensure the wheels are rated for "soft tread." Standard nylon wheels (like those pictured) can sometimes scratch finished wood; rubberized versions are better for those surfaces.Sizing Check: Before buying a replacement, measure the diameter of your current stem with a caliper or by taking it to a hardware store to check against a thread gauge.