GBU-39 Specs

At just 5.9 feet long and 285 pounds, the bomb’s small size increases the number of weapons an aircraft can carry, therefore raising the amount of targets it can kill in one sortie. Because of its size and precision accuracy, it also reduces collateral, or unintended, damage in the target vicinity. Global Security

Specifications:

Diameter: 7.5 inches
Length: 71 inches
Weight: 250-lb
Warhead: steel case for penetration
50 lbs of high explosive
Guidance Differential GPS/INS , Autonomous, all weather
Accuracy three meters circular error probable (CEP) for surveyed target
stand-off range 60 nautical miles
Penetration "six feet of reinforced concrete"
"more than three feet of steel-reinforced concrete"

Video Below the fold