The swivel base on this vise may seem like it would be a useful feature, but in fact it renders the vise useless for clamping anything that you need to apply any torque to. The locking lever simply screws a threaded pin down onto a smooth bottom plate, providing a weak friction fitting that slips easily. You would think the locking pin would fit into a set of holes or slots (seems like a no-brainer, doesn't it?). You'd be wrong. I had a project to complete, so, rather than returning this vise and buying a... more info