Perfect Size: Diameter 50mm, wheel width 17mm, mounting height 67mm, mounting rod M10 * 25mm High Quality Materials: The wheels are made of PTE material and the stable shell makes our universal wheels wear-free, very durable and long lasting. Flexible Selection: The package contains 2 M10 rollers without brakes and 2 M10 rollers with brake. Each wheel has a load capacity of 40kg and a set of 4 parts totaling 160kg. Quiet: Built-in low noise bearings, very quiet and durable. The wheels can be rotated 360 degrees. This is the ideal choice for all DIY furniture that has moving wheels. Wide Range of Applications: The wheels can be used in families, schools, shops and hospitals. They are also ideal for coffee tables, plant racks, bookcases, shoe baskets, shopping carts and workbenches.