Sturdy and Durable - The replacement roller is made of high quality plastic, durable and firmly attached to the basket. Assembly - Easy to assemble, just press by hand - no tools required. Size - The outer diameter of the roller is 37mm and the center of the inner shaft is 5mm, which is suitable for many types of dishwashers. Package - A piece of 8 dishwasher rollers, buying a set can ensure the replacement of all your dishwasher rollers, which is economical and practical. General - This plastic dish basket roller is suitable for all types of Siemens Bosch dishwashers.