1. Designed for tracheal/bronchial suction. 2. Smooth clear PVC ensures efficient mucus suction while minimizing potential damage to the delicate tracheal mucous membranes. 3. Specially designed for easy passage through plastic endotracheal and tracheotomy tubes with minimum irritation to patient. Any further information will be provided upon the receipt of your enquiry. 4. Open distal end with elliptical eye for easy and efficient suction. 5. Color-coded connector at proximal end for instant identification of catheter size. 6. Available with thumb control device for positive control during suction. More Product Features Standard: CE; ISO; FDA Origin: China Packing: 1pc/PE pouch; 50pcs/box; 500/ctn Company: Intrgral Medical Products Co., Ltd.