Super T has the consistency of thin syrup and is used where you don't have a perfect fit, e.g., a jagged wood break. Also used on porous woods such as cedar, where Hot Stuff might soak in too quickly for a good bond; it bonds in 10 to 25 seconds.
Special T has a “cold molasses” consistency and is used as a gap filler or to glue the brass tubes into pen blanks, with a 30- to 50-second bond time.