Self-Cath Olive Tip Coude with Guide Stripe® and Tapered Tip Coude with Guide Stripe®. The Guide Stripe® allows for monitoring of catheter tip position during insertion and removal. Olive Tipcoudes are available in sizes 6 to18Fr, 16” long with funnel end and in a 12 and 14FR female, 8” long with funnel end. Olive Tip coude female is an excellent teaching catheter for women. Tapered Tip coudes are available in sizes 8 to14Fr, 16” long with funnel end.