Most Solitaire 144 variants have a screw thread, since a screwed connection is more durable and all current Meisterstücks are uniformly constructed. Early Solitaire Ramses models still had a plug-on cap; due to the high barrel weight, however, this loosened easily, which is critical with precious-metal barrels. When posting the cap on the back of a metal barrel, scratching of the surface is additionally threatened, which is why this is advised against; the cap lip itself can also take damage, as is often observed with old Safety pens. Such Solitaire pieces are anyway rather jewellery pieces than robust utility devices. For writing without the cap posted, additionally, the fact speaks that the Hematite thereby does not become too rear-heavy.