R155-2RS Full Ceramic Ball Bearing, the inner diameter is 5/32", outer diameter is 5/16" and the width is 1/8", this is a popular size that could be used in many applications, Bearing is made of Ceramic.

• Item: R155-2rs Ball Bearing
• Type: Full Ceramic Ball Bearing
• Cage: PTFE
• Balls: ZrO2 Ceramic
• Closures: PTFE Covers (white)
• Inner/outer races: ZrO2 Ceramic
• Size: 5/32" x 5/16" x 1/8" inch
• Inner Diameter: 5/32" inch
• Outer Diameter: 5/16" inch
• Width: 1/8" inch
• Quantity: One Bearing
• Highest Temperature: 356 (degrees fahrenheit) = 180 (degrees Celsius)