Mini Skater 16 PCS Black Generic ABEC 9 Precision 608 RS Skate Ball Bearing Deck Longboard Bearings(Black) 16 PCS bearings of Blank Skateboard and Longboard bearings Inner Diameter : 8mm,outer Diameter : 22mm Pre-Lubricated Speed Lubricant Lube Provide the Best Performance and Durability High quality skate bearing, work with all types of skateboards and longboards.