Full Ceramic R8 Ball Bearings, the inner diameter is 1/2", outer diameter is 1 1/8" and the width is 5/16", this is a popular size that could be used in many applications, Bearings are made of Ceramic.

• Item: R8 Ball bearings
• Type: Full Ceramic
• Quantity: One ball bearing
• Bearing Size: 1/2" x 1 1/8" x 5/16" inch
• Inner/outer races: ZrO2 Ceramic
• Balls: ZrO2 Ceramic
• Cage: PTFE
• Closures: Open
• Net Weight: 16.6 grams
• Highest Temperature: 356 °F (degrees fahrenheit) = 180 °C (degrees Celsius)