Experiment with slippery, messy, ass-filling fun with the Lube Luge 4" silicone trough-style plug. An opening in the base connects to the Lube Luge's lengthwise open center to completely fill your hole with lube or other liquids of your choosing, with the option to connect your favorite funnel, nozzle, or tube. Smooth, flexible silicone and a tapered tip allow easy insertion. Total Length: 4". Insertable Length: 3.5". Width: 1.5". From Doc Johnson. Red.