Compatibility: This universal anti-leak valves stem seal rings is suitable for BJ/BJ/BTK/BK/BQ/BH series ice cream machines. Material: Made of high-plastic, it ensures durability and long term use. Product Dimensions: With a size of 4.3cmx2.5cm, it perfectly fits the valves stem of your ice cream machine. Package Includes: Each package contains anti-leak valves stem seal rings. Function: It effectively prevents leakage, ensuring smooth and efficient operation of your ice cream machine. Specification: Material: Plastic Size Chart: 4.3cmx2.5cm/1.69inchx0.98inch Package Includes: 1Ice Cream Machine Commercial Accessories Note: Please allow slightly errors due to manual measurement and different monitors.