CBU-75 Mk 5 Mod 0 Sadeye Cluster Bomb 

The CBU-75 Sadeye was a United States cluster bomb used during the Vietnam War.
It could hold 1,800 one pound (450 g) BLU-26 anti-personnel bomblets, each containing 0.7 pounds (320 g) of explosives with impact or time delay fuzes that would produce around 600 fragments.
The BLU-26, a small aerial dispensed, centrifugally armed, high-explosive (HE), anti-personnel (AP), fragmentation submunition that is impact fired.
The submunition consists of two hemispheres held together by a crimp ring. The bodies of the BLU-26 are aluminium, embedded with steel fragmentation balls.
They are olive drab in color with a small yellow dot on the hemisphere. Each BLU-26 contains approximately 85 grams of an explosive charge and uses the M219/M219E1 fuze.
There are no external features that distinguish between BLU-26, 36 & 59 submunitions.
As each submunition is released from the dispenser, the air stream catches the flutes spinning the munition to provide the centrifugal force required to arm the fuze. Designation and loading data may be stencilled in yellow on the submunition.