Cook® Large Check-Flo – Introducers with radiopaque band Product Information Used to introduce balloon, closed and non-tapered end catheters and other devices for intervention. Related products Add to cart Cook® Aurous Centimetre Sizing Catheter $0.00 Add to cart Cook® Coda Balloon Catheters $0.00 Add to cart Cook® Extra Large Check-Flo – Introducers $0.00 Add to cart Zenith Flex® $0.00 Add to cart Zenith Thoracic $0.00