Didn’t hear it.
What we have heard before is ball bearings. But traditionally, nazi bombs have tended to be simple pipe bombs made with gunpowder and a few nuts and bolts. Hamas/Hezbollah (and they do work together) are heavy on wounding with shrapnel made from ball bearings, glass, needles, filth (like horse manure and even arsenic), All sorts of stuff that is difficult to remove.
I’m no expert but with the kind of wounds we saw, it seems like some serious schrapnel was put in those bombs.