Product Selling Point:1. Safe for All Floors: Soft polyurethane-coated casters are gentle enough for hardwood, laminate, vinyl, tile, and carpet floors without any scratches or marks. The soft outer shell prevents damage on the floor even without a floor mat. This means that castors can be an alternative to a chair mat. They can also work well on a chair mat if you insist. Just enjoy carefree, safe glide all day long.2. Innovative Braking System: There are two wheels with a locking system included to help you fix the chair in the right place. New Stem Design & Bearings: The new geometry of our heavy casters prevents axial exhaustion of the bearings of our chair roller wheels.3. Super Smooth and Quiet Rolling: With 360° free roller heads and stainless steel balls, you will feel the movement of the wheels like silk. When using them, you can even hear it silently. These chair wheels run freely on carpet and wooden floor.4. and made of stainless steel and polyurethane, making the wheels stronger than before and having extreme abrasion resistance. Thanks to larger ball bearings and higher quality castors (single wheels) load up to 45kg/100kg of weight. This makes heavy duty casters a great option for heavier people.5. What you get: 3 pcs. 2.5 inches (11*22mm) activity + 2 pcs. 2.5 inches (11*22mm) with brake (5pcs/set)6. Easy Installation: Simply remove the old casters from the chair base, no tools required—and push the stem of the new chair casters into the slot until the stem is firmly anchored. Product Specifications:Ask NameCaster Wheel SetMaterials: Stainless Steel + Polyurethane SizeWheel Size: 63.5mm/2.5inch Stick Size: 11*22mm/0.43*0.87inch Color: BlackWeight: 1kg/2.2lbQuantity: 5pcsPackage Included:3pcs 2.5 inch (11*22mm) activity2pcs 2.5 inch (11*22mm) with brakeNote:1. Please allow 1-2cm differences due to manual measurement.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Warranty Services: If you have any questions about our products, please feel free to , we will provide you with quality service and best solutions. Hi, guys, thank you for visiting my store. If you want to buy more than we listed, please . Have a nice day!