Powerslide ILQ9 Pro 608 Bearing 16-pack Shield: SCRS = S Chanel Rubber Shield to avoid contamination Cage: Nylon retainer with self lubricant material Balls: 6 balls;chrome steel Raceways: 608 standard; stainless steel Lubricant: TK-gel made in US Weight: 11g Radial Tolerance: C3 Specials: Alubox incl. spacer Engineered by Twincam