FR4ZZ Flanged Shielded Ball Bearings, the inner diameter is 1/4", outer diameter is 5/8" and the width is 0.196", this is a popular size that could be used in many applications, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease.

• Item: FR4ZZ Ball Bearings
• Type: Deep Groove Ball Bearings
• Closures: 2 Metal Shields
• Lubrication: Self Lubricated (Grease)
• Dimensions: 1/4" x 5/8" x 0.196" English Size
• ID (inner diameter)/Bore: 1/4" inch
• OD (outer diameter): 5/8" inch
• Width/Height/thickness: 0.196" inch
• Quantity: 10 Bearings
• Dynamic load rating: 335 LBS
• Static load rating: 139 LBS
• Equal: FR4-2Z &FR4-ZZ
• Most common application: RC Associated RC500 (Gas)