A hand-held manual tool in a disk-like form intended to be used to grip and/or twist nuts, caps, connectors, adaptors or knobs on medical devices, usually to lock/unlock components. It is not specifically intended to be a disability-assistive tool (it is intended to help any user) and might have one or more gripping component(s) or spanner-like ends, and a lever or dial for twisting/turning. This is a single-use device.