Comment by onion2k

De-orbitted 1-2 ton steel rods will have about the same effect - ie. you can hit many strategic objects of your attacker.

The orbital kinetic strike weapons that have been proposed in the past are usually 2 ton titanium rods that would hit at about Mach 10, and even with that level of force they've been dismissed as less useful than ballistic warheads. Things falling from space just aren't as dangerous as people tend to assume.