Solid ring B174N for Schlafhorst autocoro spare parts 1.Teeth type:OK74,OK61,B174 2.Life:3-4 ... 3.17 years experiences Solid ring B174N for Schlafhorst autocoro spare parts JINQIAO spinning machinery parts manufacturing co.,ltdEstablished in 1996,as a ... to produce high quality open end rotor spinning machine spare parts for more than 17 years.Now,JINQIAO company has been a ...