608-2RS High Speed Deep Groove Ball Bearings Double Rubber Seals ABEC-9 Skateboard Bearings for Blenders, Skateboards,Inline Skates,Scooters,Spinners,Roller 8x22x7mm 608 Skateboard Bearing -Material: Chrome steel, ABEC-9 high precision, more durable, move smooth, low noise, high speed 608-2RS High Speed Deep Groove Ball Bearings Double Rubber Seals ABEC-9 ABEC-9 precision higher speed and creating lower friction，Special structure designed for skateboarders, clearance C3 for radial slack between the inner and outer rings compensate for thermal expansion 608-2RS High Speed ABEC-9 Skateboard Bearings made of Chrome steel for durability, resistance to corrosion and rust Rubber shields on both sides keeping lubricant in and contaminants out. -Package Included: 10 pcs 608-2RS High Speed ABEC-9 Skateboard Bearings -Size: 608 2RS 8x22x7mm Inner Diameter=0.31"/ 8mm Outer Diameter=0.87"/ 22mm Thickness=0.28"/ 7mm -Revolutions Per Minute (RPM) limit of 34,000 with grease lubrication Deep Groove Ball Bearings Double Rubber Seals 608 high speed Skateboard Bearing ABEC-9 precision higher speed and creating lower friction，Special structure designed for skateboarders, clearance C3 for radial slack between the inner and outer rings compensate for thermal expansion -Wide Application: 608 ball bearing are used in skateboards, roller skates, inline skates, scooters,Longboards, wheel bearings, high speed Skateboard Bearings If these 608-2RS High Speed ABEC-9 Skateboard Bearings don't live up to your expectations, please let us know. You take NO RISK when you purchase with us. 608-2RS High Speed ABEC-9 Skateboard Bearings You'll probably order MORE