Olympus 290 Series Insertion Tube This insertion tube is a compatible replacement part for Olympus 290 series flexible endoscopes (GIF-290 CF-290). Manufactured to original specifications, it helps restore reliable insertion and flexing performance during gastroscope and colonoscope repair. Key Features Precision-machined to match original dimensions Durable medical-grade stainless steel and polymer construction Strict inspection and helium leak test before shipment Direct