US WW2 BANGALORE TORPEDO CONNECTING SLEEVE "M1A1 BANGALORE TORPEDO".

The Bangalore Torpedo is composed of several assembled 1.5 meters long ,5 cm wide connected tubes, each of them filled with 3.85 kg of TNT.

The 1.5 metter long pipes were connected with these sleeves. 

Sometimes referred to as a "Bangalore mine", "banger" or simply "Bangalore".

Used on D-DAY by engineer units to breach barbed -wire obstacles on the beaches.

As seen in movie The Longest Day and Saving Private Ryan