A brass knuckle is a real coward’s tool, honestly, though I won't deny they can inflict some pretty nasty, heavy injuries.
And what exactly constitutes being "brave"—is it charging at five people at once? Personally, I believe that when you're defending yourself, any means necessary are justified. A telescopic baton is quite effective, certainly, but if we are looking at those types of implements—excluding guns or knives, obviously—a decent stun gun is probably your best bet; you just catch them off guard with the shock and then take them down while they're stumbling around like an idiot. Though, as I mentioned on the previous page, SAP gloves are the real deal... that's where the true advantage lies.