Cross-country interchangeable plate system

An attachment for a pole,

• said attachment having a substantially cylindrical sleeve which is fastenable to a lower free end of a pole tube and has an upwardly open blind hole for receiving the lower free end of the pole tube, the pole tube having a longitudinal axis,
• wherein an interchangeable element is fastenable releasably to the sleeve in a form-fitting and force-fitting manner,
• wherein the sleeve has a head region and a body region downwardly adjoining the head region,
• wherein at least one axial portion of the body region of the sleeve has an external thread,
• wherein the interchangeable element has a tip or a rolling surface at a lower end thereof, or a tip is embedded into the lower end thereof,
• wherein the interchangeable element has an axial upwardly open blind hole for receiving the sleeve,
• wherein the interchangeable element has an internal thread in its blind hole, said internal thread being suitable for engaging in the external thread arranged on the sleeve, for the purpose of fastening the interchangeable element to the sleeve, and
• wherein the interchangeable element has at least one latching lug which extends in an axial direction and is suitable for engaging in a corresponding recess arranged on the sleeve.