I picked two pair of these wierd pliers at an estatae sale today. Mainly because they were SnapOn's but also because I've never seen them before and what the heck, the guy thought so much of them he had two. Anyways, they're basic channellocks but top jaw has a slot cut-out right down the centerline. The lower jaw has a raised metal piece that when closed fits right into the upper jaws cut-out slot. Does anyone know what these pliers are used for?
