The durable 3D printed design is crafted from high-quality, fuel-resistant plastic, which ensures a long lifespan, even under rigorous use. All components are made in the USA. However, we still recommend rinsing the fuel tester with water regularly to extend the product lifespan even more. The integrated funnel guides fuel sumps into the catch jar, minimizing splashing and leakage for cleaner and more efficient operation. A unique stainless steel mesh is seamlessly integrated into the pour spout to help filter out contaminants, ensuring only clean fuel is returned to the tank when draining. The stainless steel actuator rod/dowel is engineered to be compatible with most general aviation aircraft fuel sumps, providing versatility and reliability. The plastic bottle has a mid-size capacity of 4oz, making it capable of accommodating several sumps while maintaining a compact and portable form factor, perfect for on-the-go use.