I've had the BlastMatch fire starter a good few years now and the times I've put it to use I've been very impressed, so I thought to post this quick review for anyone looking to get a great survival flint. mine came as part of the "ultimate survival technologies survival kit" and along with everything else in there it's performed perfectly.
It has a nice sizeable piece of flint, very long lasting.
It has a durable handle/case with lanyard hole, though if you use a lanyard you cannot secure the cover in it's open position as seen bellow. I keep it in the Otterbox without a lanyard with the rest of the kit anyhow.
One thing i did notice is how flexible the thin parts of the cover are when opening and closing it they would probably snap under any serious pressure, that would stop you being able to secure the flint inside the handle keeping it compact. though the functionality wouldn't be lost.
When secured in place in the closed or opened position though there is no stress put on them and there is little chance that they will get broken.
All in all a fantastic piece of survival kit, extremely usable, would recommend to any survivalist/prepper along with the the rest of the kit, which includes a signalling mirror which you can aim, the stupidly loud "jet scream" whistle, a chainsaw and WetFire fire starters which work better when wet, though i haven't tested those yet