Matching the of the fully automatic coffee machine, the milk tube is soft and flexible and does not tear . It has higher heat and pressure resistance, resistant to high 200 degrees Celsius and low -60 degrees Celsius. There is also a cleaning brush in this kit, practical, you can clean the milk tube and milk pipe after using the coffee machine. Item Name: Cleaning Brush Kits Material: Stainless Steel Features: Food Grade, -friendly, Easy to Clean, Wide Application Color: black+silver Size Details: Silicone Tube: Length: 21.9cm/8.62 inch (.) Inner Diameter: 0.63cm/0.25 inch (.) Outer Diameter: 0.95cm/0.37 inch (.) Cleaning Brush Length: 17.3cm/6.81 inch (.) Stainless Steel Tube: 18cm/7.09 inch (.) Package Contents: 1 x Cleaning Brush 1 x Silicone Tube 1 x Stainless Steel Tube Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.