Looking for a few cheap or free ones. Need them to study sink rates and where stuff is going for a year or two. May lose them? But during winter i'll be needing to leave them in the ocean overnite. During summer I just need to toss some early at high tide with markers and see where they went. I got no intentions of selling them. So you can hit them with a grinder or whatever you like. Just thought it would be interesting to do a depth study like someone did back in the day. PM me what you got. Posted this in the beach section because I know you guys hit a lot of junk Tungsten