17pcs gasket for Gastroback Solis Breville Sage BES920 BES900 espresso machine Features: [EASY REPLACEMENT] Designed for easy replacement, these coffee machine O-rings can be installed in minutes without the need for specialized tools or skills. [COMPLETE SET] This replacement set contains 17 high-quality O-rings designed specifically for the Series 9 coffee machine. [EXTEND THE LIFE OF YOUR MACHINE] Replacing worn O-rings with these new ones helps extend the life of your coffee machine and maintain consistent performance. [PRECISE FIT] These piston seals provide a precise fit and ensure an airtight seal for steam and soft connection hoses, helping prevent leaks and maintain optimal function. [DURABLE MATERIAL] Made from high-quality rubber, these O-rings are durable, long-lasting, and resistant to wear. Specifications: Material: Rubber Size: 0.5 cm / 0.20 inch Package Includes: 1 set of coffee maker plunger gasket Note: Please allow slight variation due to manual measurement and differences in display monitors.