... 18-580mm <4>OthersMaterial:Rings and rollers: chrome steel Cages: brass, steel and nylonDesigns includes:Series: 21300, 22200, 22300, 23100 ... , 23200, 24000, 24100 and 23900 Precision: P0 and P6 Suffixes: ... lubrication groove in outer ring, with three oil holes Internal clearance series: C2, C0, C3 and C4Application: Main market ...