The Can Jam is a yo-yo by YoYoJam released in 2002-2003. It is their second fixed axle yo-yo after the Jam, featuring a Butterfly shape. It is an inexpensive model that is sold at school demonstrations and also used as a promotional item. It could also be screwed apart so that the user could untangle or replace the string.
YoYoJam Can Jam (from Dave Schulte's collection)
2003 Midwest Regionals special edition yo-yo (from Dave Schulte's collection)