Rusch - 16" Tiemann Coude Tip Intermittent Catheter is a urinary catheter for short-term or intermittent catheterization. Rusch Tiemann catheters feature a slightly stiffer, yet pliable, coude tip for easier insertion into the urethra. These urinary catheters are made of siliconized PVC, with color coded tips for easy size identification. Choose Rush Tiemann Intermittent catheters are ideal for those who have difficulty with catheterization. French sizes: 12 (White), 14 (Green), 16 (Orange), 18 (Red), 20 (Yellow). Each, Box of 50.