Tungsten Par Lights are Par light sources that are Tungsten balanced. These lights have different degrees of spread based on the globe type. 

Very Narrow glass is clear so the beam is the tightest.  Narrow is a slight frosting on the glass, which spreads it a little more.  These globes are best for Night Exterior work in condors which give you a very even backlight field over large distances.  The medium has rectangular patterns across the glass that spreads the light and you can choose to have a horizontal beam or a vertical beam.  The wide lens has square patterns across its glass that spreads the light even more than a medium and you can alter the beam as well.  

The light is not good for hard shadows. They are, however, amazing for bouncing lights or projecting them through diffusion frames.  Great for hot spots in the background, amazing for moonlight ambiance.