17287-2RS is Sealed Ball Bearing, Balls are made of Chrome Steel, each 17287-2RS bearing has Non Contact Rubber Sealed, the bearing is pre-lubricated with grease. inner diameter is 17mm, outer diameter is 28mm and width is 7mm.

• Item: 17287-2RS Ball Bearing
• Type: Deep Groove Ball Bearings
• Cage: Nylon
• Clearance: C0~C3
• Balls: Chrome Steel
• Closures: Non Contact Rubber Sealed
• Inner/Outer Rings: Chrome Steel
• Lubrication: Pre Lubricated (Grease)
• Dimensions: 17mm x 28mm x 7mm/Metric
• Inner Diameter: 17mm
• Outer Diameter: 28mm
• Width: 7mm
• Size: 17 x 28 x 7 mm
• Quantity: One Bearing
• Made for bicycles