Got you covered...
Sakr Factory Cobra Anti-Tank Improved Warhead
Grenade Length: 925mm
Weight: 1.0 Kg warhead, 2.2 kg grenade
Velocity: 120 m/s Initial & 300 m/s max
Range: 200 M Min, 350 M Effective & 500 M Max
Armor Pen: >500 mm armored steel
The SAKR Cobrra anti-tank weapon system is an improved warhead for the standard PG-7 weapon system.... The Octal shaped charge has a new pattern liner manufactured by a specially developed process, giving an improvement in performance of approximately 20 percent compared to standard cooper cones. The fuzing system is electromagnetic and is initiated by contact between the double ogives of the warhead. It is capable of functioning at angles of 80 dgerees from normal and has a response time less than 10 us. The Cobra warhead has been demonstrated penetrating over 500 mm of armor steel at 3.5 calibres standoff distance in static tests.
All information courtesy Janes Infantry Weapons of the World 2002-2003
Hope this helps,