Our underwater retrieving magnet is specifically manufactured for underwater location and retrieval of metal objects such as firearms, knives, tools, etc. in rivers, lakes, and ponds. It will locate heavy objects (such as vehicles) but is not for their retrieval. The magnetic bar is 2” in diameter x 40” long and uses a thick-walled stainless steel housing as well as stainless eye bolts for added strength and rigidity. The magnetic structure is made with Powerful Rare Earth Magnets which gives it exceptional pulling and holding power and will hold on to anything that it picks up.