Agreed, don't go sticking your grubby gap tools in there. Iridium plugs are especially vulnerable, but I've seen platinum and standard plugs damaged by egregious gappery too.
Eyeball each plug to make sure it hasn't been dropped on its head, and screw it in.
For that matter, every NGK plug I've ever used has come from the factory with the correct gap. I haven't gapped a plug or even bothered to check in aeons. Eyeball and install.
2002 Suzuki DL1000 V-Strom, Dark Metallic Space Blue
1983 Suzuki GS850G, Cosmic Blue
2005 KLR685, Aztec Red - Turd II.2, the ReReTurdening