Suitable for all Harder & Steenbeck 0.4mm, 0.44mm & 0.45mm headsets & nozzles including:

ULTRA 2024; EVOLUTION 2024; INFINITY 2024; Giraldez Infinity; Ultra 2006 - 2023; all Evolution 1998 - 2023; all Infinity 2007 - 2023; all Kyiv Infinity.