The new Stillpoints Ultra 7’s were originally custom-designed for Rockport Technology Arrakis loudspeakers. They are a culmination of years of research and development and are currently the pinnacle of the Stillpoints range. The range of thread sizes and pitches are so far custom to Rockport, Avalon, Wilson and Raidho. The size and pitch of the threads currently available are: M10-1.5, M22 – 2.0, M22 – 2.5, 1/4-20, 5/16-18, 3/8-16, 1/2-13.