DescriptionThe product is a set of rollers used for door, window, drawer and vending machine, etc. It is made of good plastic material, durable for you to use for a long time. After installing these pulleys, it is easier to push heavy objects or open doors and windows. It is a must-have gadget at home.Features-Color: White. -Material: Plastic. -Size: About 2.50X2.50X2.00cm/ 0.98X0.98X0.79inch. -These pulley bearings are rust-proof, wear-resistant, excellent friction resistance and work smoothly. -Its exquisite workmanship can serve you well. You won't miss it. -The selection of roller materials is environmentally friendly and safe. -The size of the roller is small so that it can be carried easily. -The pulley is easy to use and install, and it is a small tool in daily life.