Reuterswärd is known for his sculpture showing a revolver tied in a knot, called Non violence, on display outside the Headquarters of the United Nations in New York City. Versions of the work are also on view in Berlin, Stockholm, Gothenburg, Malmö, Lund, Borås, Caen and Kirchberg.

Reuterswärd was a poet and an artist. In his visual art he worked with the conection between language and letters. Interlettre means the empty space between letters, which in this case are the objetcts it self (12 sculptures). The letters are missing. The viewer is suppose to figure out the letters and the meaning behind them, and behind the installation.

The visitors take those "empty spaces" (which are indead empty sculptures in metal) as mean to produce sounds. The man playing on one of the sculptures begins to produce rhythmic sounds that motivate the three women to enter the space of sculpture and dance.