Cannulas in the Comfort Plus Family: #0190 Harness Only with 2 inch Connector #0197 Clear in Color, 7 Feet in Length with Standard Connector #0553 Clear in Color, 7 Feet in Length with Standard Connector & EarMates attached #0198 Clear in Color, 14 Feet in Length with Standard Connector #0199 Clear in Color, 14 Feet in Length with Threaded Nut Connector #0195 Clear in Color, 25 Feet in Length with Standard Connector #0196 Clear in Color, 50 Feet in Length with Standard Connector