Plug | Gasketed | Spigot | Threaded | 1-1/4" x 1/2" | 1/2" x 1/4" | 2-1/2" x 1-1/4" | 2" x 2"" x 1" | 3-1/2" - 2-1/2" x | 3/4"-10 | 3/8" x 1/4" | 4" x 4"