Kodak Tri-X 400 is a classic, high speed panchromatic film that is a good choice for photographing dimly lighted subjects or fast action.  It is also an excellent film or photographing subjects that have great depth of field and fast shutter speeds. Kodak Tri-X 400 is recommended for push-processing.

Features
Traditional black and white film
120 Medium Format
Classic grain structure for low light and action
Fine grain, high sharpness
Wide exposure latitude
A maximum pushability to EI 1600