Reddit reviews XS Scuba Rattle Pointer with Clip
We found 1 Reddit comments about XS Scuba Rattle Pointer with Clip. Here are the top ones, ranked by their Reddit score.
XS Scuba Rattle Pointer with ClipXS Scuba Rattle Pointer with Clip:Fantastic Tool, Versatility as Underwater Tool or AccessoryCorrosive-Resistant Metal Construction with ClipDubbed the "Swiss-Army Knife of Scuba Diving Equipment"
I can't tell for sure, but that looks too big to be a dive knife. My guess would be a metal rod used to bang on his tank to get other diver's attention. Something like this: http://www.amazon.com/dp/B00CHWU6TE?psc=1