The OFAB-250 is a 250kg high-explosive fragmentation bomb employed by Russian aircraft. This is your basic modern Russian "iron" bomb. Roughly equivalent to a US Mk.82 500 pound bomb. These bombs are used on types such as the Su-17, Su-24, Su-25, MiG-27, later MiG-21 and other attack types.
The set from Eduard includes four bombs, cast in resin. Each bomb is built from three sections: the main warhead, the tail cone and the tail fins. Casting is on par with Eduard's usual excellent standard. A small decal set is also included with the very basic stencils appropriate to the bombs.
The only downside to this set is the packaging, and the way the fins are cast. Out of the four sets of fins, one had broken fins. At least one is visible in the pack floating around, but it will be a difficult fix. That said, Eduard's customer service is exemplary, arguably the very best in the entire scale modeling industry, and replacement parts should be easy to receive (with the understandable wait for shipping time).
Since this review is a close duplication to the OFAB-100, review the assembly hints included with that review