Product information – Product Name: Swivel Stem Castor Wheel with Brake – Material: PP/PA/Nylon – Color: Black – Size: 1.5 inch Package includes: 10 * 1.5 inch Castor Wheel with Brake 10 * Plastic Sleeve 10 * Metal Sleeve Features: – The chair castors are made of high quality PP/PA/nylon material that makes it safe for any floor, durable for long time use. – The swivel casters are 360 degree rotary. Glide smoothly well rolling to make you go through any corner of the room. – Leaving no scratch and mark on the floors, including laminate, hardwood, carpet, tile, bamboo flooring, and vinyl plank. – Comes with metal and plastic castor sockets, easy to attach the wheels to furniture, great replacement for old castor wheels. Warm tips – Manual measurement, please allow slight errors in size. – If you have any questions about how to use the castor wheels, please feel free to contact us, we will resolve your questions as soon as possible.