Abstract: A device which is externally fitted to a rod-like object has an inner tubular member and an external, rigid tubular member. Each tubular member has a longitudinally extending opening through which the rod-like object can be inserted. The internal tubular member has a conically narrowing outer peripheral surface and an inner surface whose shape approximately corresponds to the peripheral surface of the rod-like object. The external tubular member has a conically shaped inner surface corresponding to the outer surface of the internal tubular member. By axially displacing the inner and outer tubular members, the device will be firmly clamped onto the rod-like object. The device can be used to clamp cloth or fabric to a tubular stand or frame structure. Also suspension devices and connecting devices such as hooks and legs can be attached on the device.