... ring NATR NATR - PP Plain retaining ring,axial guiding, yoke type track rollers NATV NATV - PP ... Plain retaining ring,axial guiding, yoke type track rollers Full complement needle roller ... type NUTR Rolling body guiding,yoke type track rollers,full roller type ... CRY Inch system,plain retaining ring,axial guiding, yoke type track rollers RSTO and STO ...