Description Overview Consists of eight open-end spinning machines: four Rieter M1/1 144 rotors (year 1977) and four Ingolstadt RU 4614 216 rotors (year 1988). Rieter M1/1 144 Rotors (4 units, year 1977) Diameter: 45 mm. No drains. No robots. No waxing. No meter counter. Ingolstadt RU 4614 216 Rotors (4 units, year 1988) Diameter: 35 mm. No drains. OB 20. 1 robot. No waxing. Includes meter counter. Condition Pictures available upon request.